crack metre

例句：

1. 1.The engineer used a crack metre to measure the depth of the crack.
   工程师使用裂缝计量器来测量裂缝的深度。
2. 2. The crack metre showed that the concrete was weak in this area.
   裂缝计量器显示这个区域的混凝土很弱。
3. 3. The crack metre indicated that the building needed reinforcement.
   裂缝计量器表明这栋建筑需要加固。