precast concrete segment 中文意思是什麼
precast concrete segment
解釋
預制混凝土砌塊-
General view of approach viaduct precast concrete segment un - loading gantry
石屎預制橋面構件之起吊架 -
Research of steam curing auto control system for precast concrete segment of shield
預制混凝土盾構管片自動控制蒸養系統的研究 -
Precast concrete segment erection with mbec lifting frame
Mbec吊架-安裝預制橋面構件 -
Precast concrete segment erection with mbec frame
Mbec吊架-安裝預制橋面構件 -
Precast concrete segment
預制混凝土砌塊
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