| |||
double hose | |||
two pipe system; double pipe system |
双 管式 : 69 phrases in 13 subjects |
Architecture | 1 |
Automobiles | 3 |
Chemistry | 2 |
Ecology | 3 |
Electronics | 4 |
Engineering geology | 3 |
General | 1 |
Metallurgy | 5 |
Mining | 1 |
Oil / petroleum | 7 |
Refrigeration | 4 |
Scuba diving | 1 |
Technology | 34 |