plumb line 详细解释
plumb line
n. 铅垂线, 测铅线
词形变化
形容词: plumbable | 动词过去式: plumbed | 动词过去分词: plumbed | 动词现在分词: plumbing | 动词第三人称单数: plumbs |
英英释义
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
补充
plumb lineplumb linen.1.铅垂线热门单词推荐
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