Analyzes the effects of indoor dust loading and of fresh air rate to the air change rate in turbulent flow clean rooms.

分析了乱流洁净室净化空调设计中室内发尘量和新风比对换气次数的影响。

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Study on microparticle in ice cores is very important because it can reflect the change of the atmospheric dust loading.

冰芯微粒的研究对反映大气粉尘变化具有重要意义。

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Coal-rock boring machine is able to achieve cutting, loading, reproduced transport, walking and spray Dust combined unit.

半煤岩掘进机是一种能够实现截割、装载、转载运输、行走和喷雾除尘的联合机组（略）。

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