呼吸性粉尘的样本收集三七毫米醋酸纤维素过滤器（孔径0.8毫米）放置在一个三十七毫米导电塑料气旋。
The respirable dust samples were collected on 37 mm cellulose acetate filters (pore size 0.8 mm) placed in a 37 mm conductive plastic cyclone.
呼吸性粉尘的样本收集三七毫米醋酸纤维素过滤器（孔径0.8毫米）放置在一个三十七毫米导电塑料气旋。
The respirable dust samples were collected on 37 mm cellulose acetate filters (pore size 0.8 mm) placed in a 37 mm conductive plastic cyclone.
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