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| 桁架中柱 | |||
| 钢制拉杆; 桁架中吊杆; 腹杆; 主螺栓; 螺栓式中柱; 桁架的中柱; 中悬式桁架的中吊杆 | |||
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| 桁架的中柱腹杆，钢制拉杆; 大螺栓 | |||
| 中杆 | |||
| king- rod: 1 phrase in 1 subject |
| Technology | 1 |
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