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Keyword:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| HJ 1287-2023 |
Exhaust gas from stationary pollution sources - Determination of smoke blackness - Ringelmann telescope method {译} 固定污染源废气 烟气黑度的测定 林格曼望远镜法 |
China Environment Industry
Standards telescope |
 English PDF |
| JJG(EJ)4-1991 |
(Semiconductor telescope (working class) test procedures) |
China Metrological
Standards telescope |
English PDF |
| JJG(EJ)3-1991 |
(Flashing telescope (working class) test procedures) |
China Metrological
Standards telescope |
English PDF |
| JJG(QJ)49-1988 |
(Micrometer collimation telescope test procedures) |
China Metrological
Standards telescope |
English PDF |
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