n.旋轉(zhuǎn)羅盤；回轉(zhuǎn)羅盤

Yet, paradoxically, he helped develop a gyrocompass for U-boats. 但諷刺的是，他同時(shí)還幫助德國潛艇開發(fā)了一種陀螺儀。

A gyrocompass is required to indicate the heading of a land, sea, or air vehicle. 陀螺被用來指示陸上的、海上的或空中的運(yùn)動(dòng)體的方向。

Another device,such as a radio compass or a gyrocompass,used for determining geographic direction. 羅盤另一種設(shè)備，例如無線電羅盤或陀螺羅盤，用于確定地理方向

The card on a gyrocompass should indicate the heading of the vehicle in which it is installed. 陀螺羅盤的羅牌應(yīng)當(dāng)指示出安裝它的運(yùn)動(dòng)體所處的方向。

Another device, such as a radio compass or a gyrocompass, used for determining geographic direction. 羅盤另一種設(shè)備，例如無線電羅盤或陀螺羅盤，用于確定地理方向