| |||
brake ring | |||
trig loop; retainer |
制动圈 : 20 phrases in 12 subjects |
Compressors | 1 |
Drilling | 1 |
Electronics | 4 |
General | 1 |
Hydroelectric power stations | 1 |
Oil / petroleum | 1 |
Rail transport | 1 |
Space | 1 |
Technology | 6 |
Telecommunications | 1 |
Video recording | 1 |
Wind Energy | 1 |