dust concentration

常见例句

This paper presents a method of measuring the particle mean size and dust concentration by small angle near forward light scattering optics and the extinction theory.
本文综合前向小角光散理论及消光原理，提出一种测量粉尘平均粒径及粉尘浓度的光学方法。
Objective To monitor coal mine dust concentration and composition, study the incidence of coal worker's pneumoconiosis, and provide a scientific basis for pneumoconiosis control.
目的监测煤矿井下粉尘浓度及组成成分，研究其与煤工尘肺的发病关系，为尘肺病防制提供科学依据。
Therefore, further measures for individual prevention and reduction of mine dust concentration in the air were considered to be necessary for reducing the incidence of lung cancer.
为此，加强防尘措施，降低环境矿尘浓度，可能对减少该矿肺癌发病具有重要意义。