"Portable Polarizing" CNS Standards List| Seamless Nickel | Ships | Iron steel | Safety requirements | Manufacture standard | Retaining Rings | Testing methods | Interface Between | |
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CNS 15759
2020 Edition Portable Polarizing Microscope for Sampling and Determining Incombustible Matter in Coal and Rock-Dust Mixture 可攜式輪椅斜坡板 |
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