secondary surface layer

• 次表层

secondary surface layer的用法和样例：

例句

1. The damage of sub-surface was very similar to the damage of the surface, mainly with a few oxidation eroding pits.
   次表层上主要分布着少量细小的氧化腐蚀坑，次表层和表层的失效非常吻合。
2. The abundance mixing those occurs in the estuary, the outstandinger is the earthward flow in the subsurexpression layer.
   在河口湾呈现的混合越强烈，次表层向陆地方向的流量就越大。