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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9966.1-2001 |
Test methods for natural facing stones--Part 1:Dry，wet and after freezing testmethods for compressive strength 天然饰面石材试验方法 第1部分:干燥、水饱和、冻融循环后压缩强度试验方法 |
China National Standards testmethods |
 English PDF |
| GB/T 12858-1991 |
Environment requirements and testmethods for ground radio-navigation equipments 地面无线电导航设备环境要求和试验方法 |
China National Standards testmethods |
English PDF |
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