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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20644.2-2006 |
Specific environmental condition - Guidance for choosing - Part 2: Polymer materials 特殊环境条件 选用导则 第2部分：高分子材料 |
China National Standards choosing |
 English PDF |
| GB/T 20644.1-2006 |
Special environmental condition - Guidance for choosing - Part 1: Metals protection 特殊环境条件 选用导则 第1部分：金属表面防护 |
China National Standards choosing |
English PDF |
| GB/T 11321-1989 |
Guide for choosing modular dimensions for waveguide components 波导元件模数尺寸选择指南 |
China National Standards choosing |
English PDF |
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