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| return bend; return elbow; tube turn | |||
| close return bend; return ell | |||
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回弯头 : 27 phrases in 8 subjects |
| Architecture | 1 |
| Automobiles | 2 |
| Construction | 1 |
| Drilling | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 7 |
| Racing and motorsport | 1 |
| Technology | 13 |
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