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| 逆流防止阀 | |||
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| 不返回的; 不倒转的; 止逆的; 止回的 | |||
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nonreturn : 36 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Compressors | 4 |
| Ecology | 2 |
| General | 1 |
| Information technology | 1 |
| Metallurgy | 1 |
| Multimedia | 6 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 10 |
| Technology | 2 |
| Telecommunications | 1 |
| Wind Energy | 2 |