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首页 - 英汉词典 - P字开头的单词或词组 - plumb line

英语解释

plumb line

汉语翻译

铅垂线

plumb line英语解释

名词 plumb line:

a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point
同义词：perpendicular

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