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| 孔型设计假腿角; 对接〔过渡〕法兰 | |||
| 对接法兰; 过渡法兰 (盘) | |||
| 对接过渡法兰 | |||
| 过渡法兰 | |||
| 假腿 (孔型的) | |||
| 假腿; 反翼缘; 反向凸缘; 配对法兰对接法兰 | |||
| counterflange: 5 phrases in 2 subjects |
| Metallurgy | 2 |
| Technology | 3 |
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