surface course

• 面层,表面层

surface course的用法和样例：

例句

1. Results were obtained only for a surface layer on the tensile side of the plate.
   只能在板的受拉侧的表面层得到结果。
2. Thus the wind can aid appreciably in cooling the surface layers of the ocean.
   这样一来，风能够明显地有助于冷却海洋的表面层。