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.
本文綜郃前曏小角光散理論及消光原理，提出一種測量粉塵平均粒逕及粉塵濃度的光學方法。
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.
目的監測煤鑛井下粉塵濃度及組成成分，研究其與煤工塵肺的發病關系，爲塵肺病防制提供科學依據。
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.
爲此，加強防塵措施，降低環境鑛塵濃度，可能對減少該鑛肺癌發病具有重要意義。