angle of friction

• 摩擦角

angle of friction的用法和样例：

例句

1. The cohesion and modulus of compression of the substratum are deeply reduced after water gushing in pits, but the internal friction angle of the substratum doesn't change.
   基坑突水破坏使得基底软土层的黏聚力和压缩模量显著下降，而对内摩擦角的影响较小。