surface roughness coefficient

• 渗透

surface roughness coefficient的用法和样例：

例句

1. A toxic penetrative spray applied to the surface.
   一种有毒的渗透性的喷雾施于该表面。
2. The permeability coefficient is the key factor to pumping and injection.
   渗透系数大小是抽水和回灌难易程度的决定因素。