| |||
输送主管; 供水干管 | |||
给水干管; 给水总管; 输水干管 |
flow main : 25 phrases in 11 subjects |
Agriculture | 4 |
Animal husbandry | 1 |
Automobiles | 2 |
Aviation | 2 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 3 |
Oil / petroleum | 1 |
Space | 1 |
Technology | 8 |
Wind Energy | 1 |