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| |||
| 清洗气体 | |||
| 清洗气 | |||
| |||
| 净化气 | |||
| 净煤气; 洗过的煤气 | |||
| 洁净气体 | |||
| 洁净煤气; 净化煤气; 纯净气体; 无尘煤气 | |||
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cleaning gas : 100 phrase in 14 subjects |
| Automobiles | 2 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Ecology | 3 |
| Electronics | 4 |
| Environment | 1 |
| Metallurgy | 56 |
| Nautical | 2 |
| Oil / petroleum | 5 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 20 |
| Wind Energy | 1 |
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