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| 加劲框架加固; 构架 | |||
| 刚性框架 | |||
| 加劲框架; 加固构架; 支撑架; 带斜框架 | |||
| bracing frame: 6 phrases in 3 subjects |
| Bridge construction | 2 |
| Oil / petroleum | 1 |
| Technology | 3 |
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