| |||
| 线流; 层流 | |||
| |||
| 流线型流动 | |||
|
stream-line flow : 3 phrases in 3 subjects |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
| |||
| 线流; 层流 | |||
| |||
| 流线型流动 | |||
|
stream-line flow : 3 phrases in 3 subjects |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |