plumb bob

英 [plʌm bɒb] 美 [plʌm bɑːb]

铅锤;垂球

机械



双语例句

  1. If the mass in question is a plumb bob, the horizontal component of F is important.
    如果所讨论的质量是一摆锤,则重要的是F的水平分量。
  2. Due to its huge height, its urgent time schedule and strict requirement of fine quality, its construction has been duly guided and controlled by application of the JD-91 type laser-heavy plumb bob surveying apparatus with a double controlled axial line extended technology.
    由于楼层高、工期紧,为确保主体结构工程质量,垂直度控制采用激光&重锤双控轴线引伸技术,使用JD-91型建设激光测量仪。

英英释义

noun

  1. the metal bob of a plumb line

      Synonym:    plumbplummet