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| bell joint; socket conduit; socket pipe; socket tube | |||
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承口管 : 40 phrases in 9 subjects |
| Agriculture | 1 |
| Architecture | 2 |
| Chemistry | 1 |
| Construction | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 28 |
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