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词汇 patent log
释义 patent logn.Nautical(名词)【航海】
  1. A torpedo-shaped instrument with rotary fins that is dragged from the stern of a vessel to measure the speed or distance traveled. Also called screw log ,taffrail log 尾航拖曳式计程仪:一种鱼雷状仪器,带有转子,拖在船尾用来测量行速或航行距离 也作 screw log,taffrail log
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