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单词
plumb line
释义
plumb line
n.
(名词)
A line from which a weight is suspended to determine verticality or depth.
铅垂线;垂直线:悬挂一重物来测定垂直度或深度的一根线
A line regarded as directed exactly toward the earth's center of gravity.
重力线:被认为是准确地指向地球引力中心的一条线
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更新时间:2025/6/5 0:25:51