lever-equal beam balance

例句：

1. 1.The lever-equal beam balance is used to adjust the height of a table.
   杠杆平衡器用于调整桌子的高度。
2. 2. The engineer designed a lever-equal beam balance to improve the stability of the bridge.
   工程师设计了一个杠杆平衡器，以提高桥梁的稳定性。
3. 3. The lever-equal beam balance was used to measure the weight of the object being balanced.
   使用杠杆平衡器来测量待平衡物体的重量。