n.旋转罗盘；回转罗盘
Yet, paradoxically, he helped develop a gyrocompass for U-boats. 但讽刺的是，他同时还帮助德国潜艇开发了一种陀螺仪。
A gyrocompass is required to indicate the heading of a land, sea, or air vehicle. 陀螺被用来指示陆上的、海上的或空中的运动体的方向。
Another device,such as a radio compass or a gyrocompass,used for determining geographic direction. 罗盘另一种设备，例如无线电罗盘或陀螺罗盘，用于确定地理方向
The card on a gyrocompass should indicate the heading of the vehicle in which it is installed. 陀螺罗盘的罗牌应当指示出安装它的运动体所处的方向。
Another device, such as a radio compass or a gyrocompass, used for determining geographic direction. 罗盘另一种设备，例如无线电罗盘或陀螺罗盘，用于确定地理方向
