China AG GB Standards English PDF List

GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.

China "AG" GB Standards English PDF List:

Standard Code	Standard Title	Standard Class	Order
GB/T 20274.3-2008	Information security technology Evaluation framework for information systems security assurance Part 3: ManAGement assurance 信息安全技术信息系统安全保障评估框架第3部分：管理保障	China National Standards AG	English PDF
GB/T 14394-2008	Computer software reliability and maintainability manAGement 计算机软件可靠性和可维护性管理	China National Standards AG	English PDF
GB/T 22195-2008	Electrical installations in ships - Low-voltAGe switchgear and controlgear assemblies 船舶电气设备设备低压开关设备和控制设备组合装置	China National Standards AG	English PDF
GB/T 22192-2008	Electrical installations in ships - Equipment - Accumulator(storAGe)batteries 船舶电气设备设备蓄电池	China National Standards AG	English PDF
GB/T 16935.5-2008	Insulation coordination for equipment within low-voltAGe systems - Part 5: Comprehensive method for determining clearances and creepage distances equal to or less than 2mm 低压系统内设备的绝缘配合第5部分：不超过2mm的电气间隙和爬电距离的确定方法	China National Standards AG	English PDF
GB/T 8987-2008	Micrographics - Test target for checking optical density of negative microimAGes in microfilming 缩微摄影技术缩微摄影时检查负像光学密度用测试标板	China National Standards AG	English PDF
GB/T 18503-2008	Micrographics - Transparent A6 microfiche - ImAGe arrangements 缩微摄影技术 A6透明缩微平片影像的排列	China National Standards AG	English PDF
GB/T 12355-2008	Micrographics - Splices of microfilm with imAGe - Dimensions and Operational Constraints 缩微摄影技术有影像缩微胶片的连接	China National Standards AG	English PDF
GB/T 13504-2008	DiAGnostic rhyme test(DRT) method of Chinese articulation 汉语清晰度诊断押韵测试(DRT)法	China National Standards AG	English PDF
GB/T 12991.1-2008	Information technology - Database languAGes - SQL - part 1： framework 信息技术数据库语言 SQL 第1部分: 框架	China National Standards AG	English PDF
GB/T 14457.3-2008	FrAGrance/Flavor substances - Method for determination of melting point 香料熔点测定法	China National Standards AG	English PDF
GB/T 14454.2-2008	FrAGrance/Flavor substances - Method for valuation of odour 香料香气评定法	China National Standards AG	English PDF
GB/T 14454.14-2008	FrAGrance/Flavor substances - Preparation of standard solution, test solution and indicator solution 香料标准溶液、试液和指示液的制备	China National Standards AG	English PDF
GB/T 14454.12-2008	FrAGrance/Flavor substances - Method for determination of trace chlorinated compounds 香料微量氯测定法	China National Standards AG	English PDF
GB/T 14454.1-2008	FrAGrance/Flavor substances - Preparation of test samples 香料试样制备	China National Standards AG	English PDF
GB/T 11539-2008	FrAGrance/Flavor substances - Analysis by gas chromatography on packed columns - General method 香料填充柱气相色谱分析通用法	China National Standards AG	English PDF
GB/T 14455.7-2008	FrAGrance/Flavor substances - Determination of ester value after acetylation and evaluation of free alcohols and total alcohols content 香料乙酰化后酯值的测定和游离醇与总醇含量的评估	China National Standards AG	English PDF
GB/T 14455.6-2008	FrAGrance/Flavor substances - Determination of ester value or ester content 香料酯值或含酯量的测定	China National Standards AG	English PDF
GB/T 14455.5-2008	FrAGrance/Flavor substances - Determination of acid value or acid content 香料酸值或含酸量的测定	China National Standards AG	English PDF
GB/T 14455.3-2008	FrAGrance/Flavor substances - Evaluation of solubility (miscibility) in ethanol 香料乙醇中溶解(混)度的评估	China National Standards AG	English PDF
GB/T 14454.7-2008	FrAGrance/Flavor substances - Determination of freezing point 香料冻点的测定	China National Standards AG	English PDF
GB/T 14454.6-2008	FrAGrance/Flavor substances - Quantitative evaluation of residue on evaporation 香料蒸发后残留物含量的评估	China National Standards AG	English PDF
GB/T 14454.5-2008	FrAGrance/Flavor substances - Determination of optical rotation 香料旋光度的测定	China National Standards AG	English PDF
GB/T 14454.4-2008	FrAGrance/Flavor substances - Determination of refractive index 香料折光指数的测定	China National Standards AG	English PDF
GB/T 14454.13-2008	FrAGrance/Flavor substances - Determination of carbonyl value and carbonyl compounds content 香料羰值和羰基化合物含量的测定	China National Standards AG	English PDF
GB/T 14454.11-2008	FrAGrance/Flavor substances - Determination of content of phenols 香料含酚量的测定	China National Standards AG	English PDF
GB/T 11540-2008	FrAGrance/Flavor substances - Determination of relative density 香料相对密度的测定	China National Standards AG	English PDF
GB/T 7121.2-2008	The strength testing method and accepting condition of the protective structures on wheeled AGricultural and forestry tractors - Part 2: Dynamic testing method 农林轮式拖拉机防护装置强度试验方法和验收条件第2部分：后置式动态试验方法	China National Standards AG	English PDF
GB/T 5184-2008	Fork-lift trucks - Hook-on type fork arms and fork arm carriAGes - Mounting dimensions 叉车挂钩型货叉和货叉架安装尺寸	China National Standards AG	English PDF
GB/T 1592.3-2008	AGricultural tractors - Rear- mounted power take-off types 1,2 and 3 - Part 3: Main PTO dimensions and spline dimensions, location of PTO 农业拖拉机后置动力输出轴1、2和3型第3部分：动力输出轴尺寸和花键尺寸、动力输出轴位置	China National Standards AG	English PDF
GB/T 1592.2-2008	AGricultural tractors - Rear- mounted power take-off types 1,2 and 3 - Part 2: Narrow-track tractors, dimensions for master shield and clearance zone 农业拖拉机后置动力输出轴 1、2和 3 型第 2 部分：窄轮距拖拉机防护罩尺寸和空隙范围	China National Standards AG	English PDF
GB/T 1592.1-2008	AGricultural tractors - Rear- mounted power take-off types 1,2 and 3 - Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone 农业拖拉机后置动力输出轴 1、2和 3 型第 1 部分：通用要求、安全要求、防护罩尺寸和空隙范围	China National Standards AG	English PDF
GB 16151.5-2008	Safety technical requirements for AGricultural machinery operating - Part 5: trailer 农业机械运行安全技术条件第5部分：挂车	China National Standards AG	English PDF
GB 16151.12-2008	Technical requirements of operating safety for AGricultural machinery Part 12：Grain combine-harvester 农业机械运行安全技术条件第12部分：谷物联合收割机	China National Standards AG	English PDF
GB 16151.1-2008	Technical requirements of operating safety for AGricultural machinery - Part 1: Tractor 农业机械运行安全技术条件第1部分：拖拉机	China National Standards AG	English PDF
GB/T 10267.3-2008	Method for analysis of calcium metal - Part 3: Direct determination of iron，nickel，copper，manganese and mAGnesium in calcium metal by atomic absorptiom spectrophotometry 金属钙分析方法第3部分：原子吸收分光光度法直接测定铁、镍、铜、锰、镁	China National Standards AG	English PDF
GB/T 7707-2008	The intAGlio prints for decorating 凹版装潢印刷品	China National Standards AG	English PDF
GB/T 22113-2008	Graphic technology - Prepress digital data exchange - TAG image file format for image technology(TIFF/IT) 印刷技术印前数据交换用于图像技术的标签图像文件格式(TIFF/IT)	China National Standards AG	English PDF
GB/T 15852.1-2008	Information technology - Security techniques - MessAGe Authentication Codes(MACs) - Part 1: Mechanisms using a block cipher 信息技术安全技术消息鉴别码第1部分：采用分组密码的机制	China National Standards AG	English PDF
GB/T 10073-2008	Methods of evaluation for imAGe quality of electrostatic copes 静电复印品图像质量评价方法	China National Standards AG	English PDF
GB/T 18430.2-2008	Water chilling (heat pump) packAGes using the vapor compression cycle - Part 2：Water chilling (heat pump) packages for household and similar application 蒸气压缩循环冷水(热泵)机组第2部分: 户用及类似用途的冷水(热泵)机组	China National Standards AG	English PDF
GB/T 22125-2008	The operation and manAGement regulations for the enterprises of marketing automobile parts 汽车配件营销企业经营管理规范	China National Standards AG	English PDF
GB/T 9326.5-2008	Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltAGes up to and including 500kV - Part 5: Pressure tanks 交流500kV及以下纸或聚丙烯复合纸绝缘金属套充油电缆及附件第5部分: 压力供油箱	China National Standards AG	English PDF
GB/T 9326.4-2008	Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltAGes up to and including 500kV - Part 4: Joint 交流500kV及以下纸或聚丙烯复合纸绝缘金属套充油电缆及附件第4部分: 接头	China National Standards AG	English PDF
GB/T 9326.3-2008	Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltAGes up to and including 500kV - Part 3: Sealing end 交流500kV及以下纸或聚丙烯复合纸绝缘金属套充油电缆及附件第3部分: 终端	China National Standards AG	English PDF
GB/T 9326.2-2008	Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltAGes up to and including 500kV - Part 2：Oil-filled paper insulated, lead-sheathed cables for alternating voltages up to and including 交流500kV及以下纸或聚丙烯复合纸绝缘金属套充油电缆及附件第2部分: 交流500kV及以下纸绝缘铅套充油电缆	China National Standards AG	English PDF
GB/T 9326.1-2008	Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltAGes up to and including 500kV - Part 1: Test 交流500kV及以下纸或聚丙烯复合纸绝缘金属套充油电缆及附件第1部分: 试验	China National Standards AG	English PDF
GB/T 5023.7-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 7：Flexible cables screened and unscreened with two or more conductors 额定电压450/750V及以下聚氯乙烯绝缘电缆第7部分：二芯或多芯屏蔽和非屏蔽软电缆	China National Standards AG	English PDF
GB/T 5023.5-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 5：Flexible cables (cords) 额定电压450/750V及以下聚氯乙烯绝缘电缆第5部分：软电缆（软线）	China National Standards AG	English PDF
GB/T 5023.4-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 4：Sheathed cables for fixed wiring 额定电压450/750V及以下聚氯乙烯绝缘电缆第4部分：固定布线用护套电缆	China National Standards AG	English PDF
GB/T 5023.3-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 3：Non-sheathed cables for fixed wiring 额定电压450/750V及以下聚氯乙烯绝缘电缆第3部分：固定布线用无护套电缆	China National Standards AG	English PDF
GB/T 5023.2-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 2：Test methods 额定电压450/750V及以下聚氯乙烯绝缘电缆第2部分：试验方法	China National Standards AG	English PDF
GB/T 5023.1-2008	Polyvinyl chloride insulated cables of rated voltAGes up to and including 450/750V - Part 1：General requirements 额定电压450/750V及以下聚氯乙烯绝缘电缆第1部分：一般要求	China National Standards AG	English PDF
GB/T 9331-2008	Single and multicore non-radial field power cables with extruded solid insulation for rated voltAGes 1kV and 3 kV 船舶电气装置额定电压1kV和3kV挤包绝缘非径向电场单芯和多芯电力电缆	China National Standards AG	English PDF
GB/T 8287.2-2008	Indoor and outdoor post insulators for systems with nominal voltAGe greater than 1000 V - Part 2: Dimensions and characteristics 标称电压高于1000V系统用户内和户外支柱绝缘子第2部分：尺寸与特性	China National Standards AG	English PDF
GB/T 8287.1-2008	Indoor and outdoor post insulators for systems with nominal voltAGe greater than 1000 V - Part 1: Test on insulators of ceramic material or glass 标称电压高于1000V系统用户内和户外支柱绝缘子第1部分：瓷或玻璃绝缘子的试验	China National Standards AG	English PDF
GB/T 6656-2008	D.C. ferrite permanent mAGnet motors 铁氧体永磁直流电动机	China National Standards AG	English PDF
GB/T 6645-2008	Granulated electric furnace phosphorous slAG used for cement 用于水泥中的粒化电炉磷渣	China National Standards AG	English PDF
GB/T 4109-2008	Insulated bushings for alternating voltAGes above 1 000V 交流电压高于1000V的绝缘套管	China National Standards AG	English PDF
GB/T 2573-2008	Test method for AGing properties of glass fiber reinforced plastics 玻璃纤维增强塑料老化性能试验方法	China National Standards AG	English PDF
GB/T 22079-2008	Polymeric insulators for indoor and outdoor use with a nominal voltAGe > 1 000 V - General definitions, test methods and acceptance criteria 标称电压高于1000V使用的户内和户外聚合物绝缘子一般定义、试验方法和接收准则	China National Standards AG	English PDF
GB/T 22078.3-2008	Power cables with cross-linked polyethylene insulation and theiraccessories for rated voltAGe of 500kV(Um=550kV) - Part 3: Accessories for power cables with cross-linked polyethylene insulation for rated voltage of 500kV (Um=550kV) 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件第3部分: 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆附件	China National Standards AG	English PDF
GB/T 22078.2-2008	Power cables with cross-linked polyethylene insulation and their accessories for rated voltAGe of 500kV (Um=550kV) - Part2: Power cables with cross-linked polyethylene insulation for rated voltage of 500kV (Um=550kV) 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件第2部分: 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆	China National Standards AG	English PDF
GB/T 22078.1-2008	Power cables with cross-linked polyethylene insulation and their accessories for rated voltAGe of 500kV(Um=550kV) - Part 1: Power cable systems-cables with cross-linked polyethylene insulation and their accessories for rated voltage of 500kV (Um=550kV) - 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件第1部分: 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件试验方法和要求	China National Standards AG	English PDF
GB/T 22071.2-2008	Test guide for instrument transformers - Part 2: Inductive voltAGe transformers 互感器试验导则第2部分: 电磁式电压互感器	China National Standards AG	English PDF
GB/T 203-2008	Granulated blastfurnace slAG used for cement production 用于水泥中的粒化高炉矿渣	China National Standards AG	English PDF
GB/T 15613.3-2008	Model acceptance tests of hydraulic turbines, storAGe pumps and pump-turbine - Part 3: Additional performance test 水轮机、蓄能泵和水泵水轮机模型验收试验第3部分：辅助性能试验	China National Standards AG	English PDF
GB/T 15613.2-2008	Model acceptance tests of hydraulic turbines, storAGe pumps and pump-turbine - Part 2: Main hydraulic performance test 水轮机、蓄能泵和水泵水轮机模型验收试验第2部分：常规水力性能试验	China National Standards AG	English PDF
GB/T 15613.1-2008	Model acceptance tests of hydraulic turbines, storAGe pumps and pump-turbines - Part 1: General rules 水轮机、蓄能泵和水泵水轮机模型验收试验第1部分: 通用规定	China National Standards AG	English PDF
GB/T 15469.1-2008	Hydraulic turbines, storAGe pumps and pump-turbines cavitation pitting evaluation - part 1: cavitation pitting evaluation in reaction turbines 水轮机、蓄能泵和水泵水轮机空蚀评定第1部分：反击式水轮机的空蚀评定	China National Standards AG	English PDF
GB/T 14049-2008	Aerial insulated cables for rated voltAGe of 10kV 额定电压10kV架空绝缘电缆	China National Standards AG	English PDF
GB/T 12976.3-2008	Paper-insulated power cables and their accessories with rated voltAGes up to and including 35kV - Part 3: Test on cables and their accessories 额定电压35kV(Um=40.5kV)及以下纸绝缘电力电缆及其附件第3部分：电缆和附件试验	China National Standards AG	English PDF
GB/T 12976.2-2008	Paper-insulated power cables and their accessories with rated voltAGes up to and including 35kV - Part 2: General and construction requirements for power cables with rated voltages 35kV 额定电压35kV(Um=40.5kV)及以下纸绝缘电力电缆及其附件第2部分：额定电压35kV电缆一般规定和结构要求	China National Standards AG	English PDF
GB/T 12976.1-2008	Paper-insulated power cables and their accessories with rated voltAGes up to and including 35kV - Part 1: General and construction requirements for power cables with rated voltages up to and including 30kV 额定电压35kV(Um=40.5kV)及以下纸绝缘电力电缆及其附件第1部分：额定电压30kV及以下电缆一般规定和结构要求	China National Standards AG	English PDF
GB/T 12972.9-2008	Flexible rubber-sheathed cables for mining purposes - Part 9：Flexible light-duty cables for rated voltAGe of 0.3/0.5kV 矿用橡套软电缆第9部分：额定电压0.3/0.5kV矿用移动轻型橡套软电缆	China National Standards AG	English PDF
GB/T 12972.8-2008	Flexible rubber-sheathed cables for mining purposes - Part 8：Flexible drill cables for rated voltAGe of 0.3/0.5kV 矿用橡套软电缆第8部分: 额定电压0.3/0.5kV 矿用电钻电缆	China National Standards AG	English PDF
GB/T 12972.7-2008	Flexible rubber-sheathed cables for mining purposes - Part 6：Flexible cables with screens for rated voltAGes up to 6/10kV 矿用橡套软电缆第7部分：额定电压6/10kV及以下屏蔽橡套软电缆	China National Standards AG	English PDF
GB/T 12972.6-2008	Flexible rubber-sheathed cables for mining purposes - Part 6：Flexible cables with monitoring core and metallic screens for rated voltAGes up to 6/10kV 矿用橡套软电缆第6部分：额定电压6/10kV及以下金属屏蔽监视型软电缆	China National Standards AG	English PDF
GB/T 12972.5-2008	Flexible rubber-sheathed cables for mining purposes - Part 5：Flexible cables for rated voltAGes up to 0.66/1.14kV 矿用橡套软电缆第5部分: 额定电压0.66/1.14kV 及以下移动橡套软电缆	China National Standards AG	English PDF
GB/T 12972.4-2008	Flexible rubber-sheathed cables for mining purposes - Part 4：Flexible coalcutter cables with individual metallic screens for rated voltAGes up to 1.9/3.3kV 矿用橡套软电缆第4部分：额定电压1.9/3.3kV及以下采煤机金属屏蔽软电缆	China National Standards AG	English PDF
GB/T 12972.3-2008	Flexible rubber-sheathed cables for mining purposes - Part 3：Trailing coalcutter cables with monitoring core and semiconducting screens for rated voltAGe of 0.66/1.14kV 矿用橡套软电缆第3部分: 额定电压0.66/1.14kV 采煤机屏蔽监视加强型软电缆	China National Standards AG	English PDF
GB/T 12972.2-2008	Flexible rubber-sheathed cables for mining purposes - Part 2：Flexible coalcutter cables for rated voltAGes up to 1.9/3.3kV 矿用橡套软电缆第2部分：额定电压1.9/3.3kV及以下采煤机软电缆	China National Standards AG	English PDF
GB/T 12528-2008	Rail vehicle cables with rated voltAGes up to and including 3kV 交流额定电压3kV及以下轨道交通车辆用电缆	China National Standards AG	English PDF
GB/T 12527-2008	Aerial insulated cables for rated voltAGes up to and including 1kV 额定电压1 kV及以下架空绝缘电缆	China National Standards AG	English PDF
GB/T 10969-2008	Specification for water passAGe components of hydraulic turbines, storage pumps and pump-turbines 水轮机、蓄能泵和水泵水轮机通流部件技术条件	China National Standards AG	English PDF
GB/T 15576-2008	Low-voltAGe reactive power compensation assemblies 低压成套无功功率补偿装置	China National Standards AG	English PDF
GB/T 3369.2-2008	Analogue signals for process control systems - Part 2: Direct voltAGe signals 过程控制系统用模拟信号第2部分：直流电压信号	China National Standards AG	English PDF
GB/T 22119-2008	Evaluation service specification for credit AGency organization - Credit rating agency 信用中介组织评价服务规范信用评级机构	China National Standards AG	English PDF
GB/T 13017-2008	Guidelines for preparing diAGrams of enterprise standard system 企业标准体系表编制指南	China National Standards AG	English PDF
GB/T 22103-2008	Technology code for municipal wastewater reuse in AGriculture 城市污水再生回灌农田安全技术规范	China National Standards AG	English PDF
GB/T 1019-2008	General requirements for the packAGe of household and similar electrical appliances 家用和类似用途电器包装通则	China National Standards AG	English PDF
GB/T 2951.13-2008	Common test methods for insulating and sheathing materials of electric and optical cables - Part 13:Methods for general application - Measurement for determining the density - Water absorption tests - ShrinkAGe test 电缆和光缆绝缘和护套材料通用试验方法第13部分: 通用试验方法密度测定方法吸水试验收缩试验	China National Standards AG	English PDF
GB/T 2951.12-2008	Common test methods for insulating and sheathing materials of electric and optical cables - Part 12:Methods for general application - Thermal AGeing methods 电缆和光缆绝缘和护套材料通用试验方法第12部分：通用试验方法热老化试验方法	China National Standards AG	English PDF
GB/T 18380.22-2008	Tests on electric and optical fibre cables under fire conditions - Part 22:Test for vertical flame propAGation for a single small insulated wire or cable - Procedure for diffusion flame 电缆和光缆在火焰条件下的燃烧试验第22部分：单根绝缘细电线电缆火焰垂直蔓延试验扩散型火焰试验方法	China National Standards AG	English PDF
GB/T 18380.21-2008	Tests on electric and optical fibre cables under fire conditions - Part 21:Test for vertical flame propAGation for a single small insulated wire or cable - Apparatus 电缆和光缆在火焰条件下的燃烧试验第21部分：单根绝缘细电线电缆火焰垂直蔓延试验试验装置	China National Standards AG	English PDF
GB/T 18380.13-2008	Tests on electric and optical fibre cables under fire conditions - Part 13:Test for vertical flame propAGation for a single insulated wire or cable - Procedure for determination of flaming droplets/particles 电缆和光缆在火焰条件下的燃烧试验第13部分：单根绝缘电线电缆火焰垂直蔓延试验测定燃烧的滴落(物)/微粒的试验方法	China National Standards AG	English PDF
GB/T 18380.12-2008	Test on electric and optical fibre cables under fire conditions - Part 12:Test for vertical flame propAGation for a single insulated wire or cable - Procedure for 1kW pre-mixed flame 电缆和光缆在火焰条件下的燃烧试验第12部分：单根绝缘电线电缆火焰垂直蔓延试验 1kW预混合型火焰试验方法	China National Standards AG	English PDF
GB/T 18380.11-2008	Tests on electric and optical fibre cables under fire conditions - Part 11:Test for vertical flame propAGation for a single insulated wire or cable - Apparatus 电缆和光缆在火焰条件下的燃烧试验第11部分：单根绝缘电线电缆火焰垂直蔓延试验试验装置	China National Standards AG	English PDF
GB/T 22129-2008	Repairing all-purpose technical criterion for AGricultural machinery 农机修理通用技术规范	China National Standards AG	English PDF
GB/T 16722.4-2008	Technical product documentation - Handling of computer-based technical information - Document manAGement and retrieval systems 技术产品文件计算机辅助技术信息处理　文件管理与检索系统	China National Standards AG	English PDF

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