Methods The concentration of total dust, respirable dust and the dust dispersivity were measured at same time.

方法对工作场所空气中某种粉尘进行总尘浓度、呼尘浓度、分散度测定。

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Methods The concentration of total dust, respirable dust and the dust dispersivity were measured at same time.

方法对工作场所空气中某种粉尘进行总尘浓度、呼尘浓度、分散度测定。

youdao