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单词 pendulum level
释义

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pendulum level
pendulum level n. Obsolete a level in which the horizontal line is determined by perpendicularity to a plumb line.
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society > occupation and work > equipment > equipment for marking out work > [noun] > level
level1340
water level1563
leveller1693
spirit level1718
pendulum level1728
bubble level1814
Y level1845
striding level1878
1728 E. Chambers Cycl. at Level Plumb, or Pendulum Level: That which shews the Horizontal Line by means of another Line perpendicular to that described by its Plummet, or Pendulum.
1874 W. M. Gillespie Man. Princ. & Pract. Road-making 94 A modification of the plumb-line level, which has the advantage of being self-adjusting, is called the ‘Pendulum level.’
extracted from pendulumn.
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更新时间:2024/12/22 22:07:43