hook coupling造句

例句与造句

1. The vehicles first used pin hook couplings to couple up and create trains.
2. In 2002, the vehicles were updated to use U-hook couplings, with less'give', but they were more prone to breakage.
3. The train was screw-coupled; each carriage was first coupled by a loose chain and hook coupling to the next; the slack on this was then taken up by a turnbuckle screw arrangement, until the buffers of the two carriages were touching.
4. It's difficult to find hook coupling in a sentence. 用hook coupling造句挺难的