1. They used a heavy cramp iron to stabilize the tracks.
他们使用沉重的金属夹具来稳定轨道。

2. The cramp iron must be checked for any signs of wear.
必须检查金属夹是否有磨损迹象。

A: Where did you put the cramp iron?
A：你把金属夹放在哪儿了？

B: I left it near the construction site.
B：我把它留在施工现场附近了。

1) 金属夹具

2) 紧固件

3) 铁路专用夹铁

1. 金属夹；紧固铁

e.g.
The plates were held in place with a cramp iron.
这些板子是用金属夹固定在原位的。

noun

1. A metal device used to clamp or fasten things together.