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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| JJG(YC)21-2010 |
Tobacco. Verification Regulation of Atmosphere Condition for Laboratory |
China Metrological
Standards Verification regulation laboratory |
 English PDF |
| JJG 790-2005 |
Verification regulation of laboratory standard microphones (coupler reciprocity method) 实验室标准传声器(耦合腔互易法) |
China Metrological
Standards Verification regulation laboratory |
English PDF |
| JJG 482-2005 |
Verification regulation of laboratory standard microphones (free-field reciprocity method) 实验室标准传声器(自由场互易法)检定规程 |
China Metrological
Standards Verification regulation laboratory |
English PDF |
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