 |
| |||
| 竖流下向通风 | |||
| 下降趋势; 不景气 | |||
| 倒风〔焰〕; 下吸 | |||
| 下沉气流; 向下气流 | |||
| 向下通风; 倒焰; 倒风; 下曳气流; 降低; 下向通风 | |||
| 下降气流 | |||
| |||
| 向下通风; 倒风 | |||
| down draft: 24 phrases in 5 subjects |
| Automobiles | 3 |
| Chemistry | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 17 |
|
| |||
| 竖流下向通风 | |||
| 下降趋势; 不景气 | |||
| 倒风〔焰〕; 下吸 | |||
| 下沉气流; 向下气流 | |||
| 向下通风; 倒焰; 倒风; 下曳气流; 降低; 下向通风 | |||
| 下降气流 | |||
| |||
| 向下通风; 倒风 | |||
| down draft: 24 phrases in 5 subjects |
| Automobiles | 3 |
| Chemistry | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 17 |