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Keyword:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| JJG 297-1997 |
Verification regulation of standard hardmetals rockwell (A scale) hardness test block 标准硬质合金洛氏(a标尺)硬度块检定规程 |
China Metrological
Standards hardmetals |
 English PDF |
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