Respiratory dust content in air I creases with raising of dust concentration.
说明空气中呼吸性粉尘的含量随着粉尘浓度的增高而增加。
Finally, the dust content which is in the process of a dust devil is calculated.
最后还对春季一次沙(尘)暴过程的载尘量进行了估算。
The morbidity of pneumoconiosis is closely related with the accumulated dust content.
结论尘肺病发病率与累积接尘量有直接关系。
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