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| 联合成对凸缘; 万向节凸缘叉 | |||
| 成对法兰 | |||
| 联合凸缘; 结合法兰; 接合法兰; 对应法兰; 对接凸缘; 配对法兰 | |||
| companion flanges: 5 phrases in 2 subjects |
| Mechanics | 3 |
| Technology | 2 |
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