hollow pillar 中文意思是什麼
hollow pillar
解釋
空心支柱管柱-
Crack - control of aeolotropic hollow slabs in orthogonal in - site concreting deck floors in the construction of large - pillar - net structure of reinforced concrete
大柱網現澆混凝土框架正交異性空心大板樓蓋的裂縫控制
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