无论是钢结构还是混凝土结构，空心的箱型结构对承梁和桥墩都比钢梁桁架式结构好。
Hollow box structures for both the deck and piers, whether of steel or concrete, are better than steel trussed structures.
无论是钢结构还是混凝土结构，空心的箱型结构对承梁和桥墩都比钢梁桁架式结构好。
Hollow box structures for both the deck and piers, whether of steel or concrete, are better than steel trussed structures.
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