英语词汇“dutchman's log”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	dutchman's log
释义	Dutchman's log Dutchman's log [¦dəch·mənz ′läg] (engineering) A buoyant object thrown overboard to determine the speed of a vessel; the time required for a known length of the vessel to pass the object is measured, and the speed can then be computed.
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Dutchman's log