![]() |
| |||
tube spring |
管簧 : 75 phrases in 15 subjects |
Automobiles | 8 |
Aviation | 1 |
Chemistry | 4 |
Drilling | 1 |
Electronics | 2 |
Exhibitions | 3 |
General | 13 |
Mining | 1 |
Oil / petroleum | 3 |
Rail transport | 3 |
Refrigeration | 3 |
Space | 2 |
Technology | 29 |
Telecommunications | 1 |
Textile industry | 1 |