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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| HJ/T 398-2007 |
Stationary source emission. Determination of blackness of smoke plunms. Ringelmann smoke chart 固定污染源排放 烟气黑度的测定 林格曼烟气黑度图法 |
China Environmental Protection Industry
Standards plunms |
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