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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 18617.1-2002 |
Technical product documentation--Organization and naming of layers for CAD--Part 1:Overview andprinciples 技术产品文件 CAD图层的组织和命名 第1部分:概述与原则 |
China National Standards andprinciples |
 English PDF |
| GB 11506-1989 |
Diagnostic criteria andprinciples of management of occupational acute 1，2-dichloroethane poisoning 职业性急性1，2-二氯乙烷中毒诊断标准及处理原则 |
China National Standards andprinciples |
English PDF |
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