plumb line
听听怎么读
英 [plʌm lain]
美 [plʌm laɪn]
是什么意思
铅垂线；
变形
复数：plumb lines
英英释义
plumb line
-
n.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
学习怎么用
双语例句
用作名词(n.)
- The plumB line is always perpendicular to the horizontal plane.
铅垂线总是垂直于水平面的。
权威例句
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