| |||
double | |||
| |||
double joint; double-jointing pipe | |||
| |||
doubled | |||
| |||
couplet | |||
| |||
couplet |
双 根 : 26 phrases in 11 subjects |
Agriculture | 1 |
Aviation | 1 |
China | 1 |
Commerce | 1 |
Drilling | 5 |
Economy | 3 |
Electronics | 1 |
General | 5 |
Oil / petroleum | 6 |
Technology | 1 |
Water resources | 1 |