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环形链
 环形链
met. stud chain
| 传 动
 传动
hydroel.st. transmission
met. driving
oil transmitting
skydive. drive
space gearing; traverse
telecom. movement

to phrases
环形链
met. stud chain
tech. hoop chain
环形链: 12 phrases in 5 subjects
Automobiles1
Desert science1
Space1
Technology8
Textile industry1