The respire symptoms are significant in large airflow track due to organic dust and in small airflow track due to inorganic dust.
且有机尘女工呼吸道症状多，大气道受损明显，而无机尘女工，较多见的是小气道受损。
To investigate inorganic element pollution status in road cumulated dust in Wusong industry and nearby areas.
了解上海市吴淞工业区及周边地区道路积尘中无机元素的污染状况。
The principle of dust explosion , dust antiexplosion electric equipment and its application in the inorganic chemicals industry are described.
阐述了粉尘爆炸的原理及粉尘防爆电气设备在无机盐行业中使用的重要性。
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