 |
| |||
| 透气; 性 | |||
| 通气性 | |||
| 透气度 | |||
| 透气率 | |||
| 气体渗透性率，度; 透气性率，度 | |||
| 气渗透率; 气体渗透性 | |||
| 透气性 | |||
| 透气性 | |||
| 气体渗透率; 瓦斯渗透率; 天然气渗透率 | |||
| gas permeability: 16 phrases in 8 subjects |
| Automobiles | 1 |
| Bridge construction | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 7 |
| Plastics | 1 |
| Technology | 3 |
| Textile industry | 1 |