Harmful gases concentration

• 有害气体浓度

Harmful gases concentration的用法和样例：

例句

1. Based on Fick Theory, an expression of the concentration of toxic gases in blasting fumes is deduced in this paper.
   本文以费克定律为基础，得出了炮烟扩散过程中有毒气体浓度的时空分布表达式。