plumb bob
复数形式
plumb bobs
1
铅锤, 垂球
a weight attached to a string or line used by plumbers and builders to establish vertical alignment and ensure accuracy in construction
A plumb bob is a simple tool used to find a vertical reference line, ensuring that surfaces or structures are perfectly upright. It consists of a weight, usually made of metal, attached to a string or cord. When the plumb bob is suspended from a point and allowed to hang freely, it will align itself with gravity, pointing directly downward. This helps measure or check for vertical alignment in construction, carpentry, and other projects, such as ensuring walls or posts are perfectly straight.
- ChatGPT The construction worker used a plumb bob to ensure the wall was perfectly straight.
ChatGPT 建筑工人使用了一个铅锤来确保墙是完全垂直的。
- The mason relied on a plumb bob to align the bricks accurately during the build.
泥瓦匠在建造过程中依靠铅锤来准确对齐砖块。
- The carpenter attached a plumb bob to the ceiling to measure the height of the walls.
木匠将铅锤挂在天花板上以测量墙壁的高度。
- He adjusted the beam while watching the plumb bob to ensure it was level.
他一边观察铅锤一边调整横梁，以确保它是水平的。
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