underwater navigation的用法和樣例：
例句
- Thermocline is important for submarine in underwater navigation and action.
溫躍層對于潛艇的水下航行和戰斗具有十分重要的意義。 - In this paper the torsional vibration problems of the propulsion shaft system of the underwater craft were discussed.
主要討論以擺盤(pán)式活塞發(fā)動(dòng)機作為其主機的某水下航行裝置推進(jìn)軸系的扭轉振動(dòng)問(wèn)題。
