![]() |
| |||
oil ring |
滑 油 环 : 64 phrases in 15 subjects |
Automobiles | 6 |
Chemistry | 3 |
Compressors | 3 |
Drilling | 1 |
Electric machinery | 2 |
Electronics | 2 |
General | 1 |
Mechanic engineering | 2 |
Metallurgy | 6 |
Nautical | 5 |
Oil / petroleum | 4 |
Plastics | 1 |
Shipbuilding | 1 |
Technology | 26 |
Wind Energy | 1 |