桥面构件 meaning in Chinese

bridge deck unit

Precast concrete segment erection with mbec lifting frame
Mbec吊架-安装预制桥面构件
Precast concrete segment erection with mbec frame
Mbec吊架-安装预制桥面构件
Segment erection with mbec lifting frame
Mbec吊架-安装预制桥面构件
Approach viaduct - segment erection
高架桥-安装预制桥面构件
General view of approach viaduct precast concrete segment un - loading gantry
石屎预制桥面构件之起吊架