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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6730.83-2022 |
Iron ore - Determination of loss on ignition - Hygroscopic water corrected gravimetric method {译} 铁矿石 灼烧减量的测定 吸湿水校正重量法 |
China National Standards corrected |
 English PDF |
| GB/T 22057.2-2008 |
Microscopes - Imaging distances related to mechanical reference planes - Part 2: Infinity-corrected optical systems 显微镜 相对机械参考平面的成像距离 第2部分：无限远校正光学系统 |
China National Standards corrected |
English PDF |
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