navigational instruments 中文意思是什麼
navigational instruments
解釋
導航儀器-
Gyroscopes are used in navigational instruments for ships, aircraft, and spacecraft.
陀螺儀用於船舶、飛機和宇宙飛船中的導航設備。 -
Navigational instruments. system omega and differential omega receivers for ships. operational and performance requirements. methods of testing and required test results
導航儀表.船舶用奧米伽系統和差動奧米伽接收器.操作和性能要求.試驗方法和要求的試驗結果
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