penetration control

• 穿透深度控制

penetration control的用法和样例：

例句

1. Marine Cable Depth Control Systems developed.
   开发水下电缆深度控制系统。
2. Low the harnessed implement to a flat surface until the embedding legs touch it and the depth control wheels are in the air.
   降低安装设备放置平面直到接触到掩埋臂，并且深度控制轮悬空。