control fin

• 操纵舵

control fin的用法和样例：

例句

1. The dorsal fin is ornamented with these two colours.
   空气垂直舵由这两色装饰。
2. The steering gear shall be controlled from the wheelhouse or emergency control by hand near the steering gear.
   舵机应能在驾驶室操纵和机旁应急手动操纵。