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| 双向配筋的混凝土 | |||
| 双向配筋钢筋混凝土; 双向配筋的钢筋混凝土 | |||
| 双向配筋混凝土; 双向配筋的钢筋混凝土; 双向钢筋混凝土 | |||
| two-way reinforced concrete: 2 phrases in 1 subject |
| Bridge construction | 2 |
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