plumb line

英 [ˈplʌm laɪn]

美 [ˈplʌm laɪn]

n.  (测水深或垂直面用的)重锤线，铅垂线

牛津词典

noun

• （测水深或垂直面用的）重锤线，铅垂线
  a piece of thick string with a weight attached to one end, used to find the depth of water or to test whether a wall, etc. is straight

柯林斯词典

• （检查垂直度的）铅垂线
  Aplumb lineis a piece of string with a weight attached to the end that is used to check that something such as a wall is vertical or that it slopes at the correct angle.

英英释义

noun

• a cord from which a metal weight is suspended pointing directly to the earth's center of gravity
  Synonym:perpendicular

双语例句

• Study on Influence of Plumb Line Deflection on Transverse Break-through Survey of Tunnels
  垂线偏差对隧道横向贯通测量影响的研究
• Electrotype alloys a plumb line attached to a narrow board.
  电铸板用铅基压铸合金一种绑在一条窄木板上的铅锤线。
• The plumB line is always perpendicular to the horizontal plane. Simulation Study and Industrial Practice of Double SENs in Beam Blank Mold
  铅垂线总是垂直于水平面的。异型坯连铸双浸入式水口浇铸技术模拟研究及工业实践
• The plumb line is being used to find the direction of gravity.
  铅垂就是这样确定，重力方向的。
• Meanwhile, it also discusses the influence of roll yaw on sideslip in spin, and of moving round plumb line on angle of bank.
  同时就尾旋中偏滚对尾旋侧滑的影响、绕铅垂轴旋转对坡度的影响等进行了讨论分析。
• A carpenter's level with a plumb line at right angles to it.
  右边角有铅线的曲尺。
• Telemetry system of two-dimensional suspension extension line and three-dimensional inverse plumb line
  悬链式二维引张线及三维倒垂线遥测系统
• The installation of boosters is made by means of lofting plumb line to ensure the mounting precision and symmetry, resulting in accurate force transmition direction, and avoiding the emergence of additional moments.
  本文采用放样吊线法安装助推器，确保安装精度和左右对称，从而保证了力的精确传递方向，避免了附加力矩的产生。
• Due to machining accuracy and limited leveling precision of gimbals, there is always an inconsistency between the visual axis and the vertical rotational axis of the digital zenith camera and the plumb line, which leads to a big deviation between measurement precision and theoretical precision.
  由于机械加工精度和常平架的调平精度有限，天顶摄影仪的视轴、垂直旋转轴与铅垂线总是存在不一致，导致测量精度与理论精度存在很大的偏差。
• This article gives an easy way in which laser plumb line is set up by means of He-Ne laser in space with the liquid level as the base.
  本文叙述以液面为基准面，用小型氦-氖激光器在空间建立激光垂直线的简易方法。