60m预制混凝土箱梁
60 m precast concrete box girder
GRC预制薄壁管
GRC precast thin-wall tube
MTT法预制检测板
MTT prepare to make to examine the plank
T梁预制
T-beam prefabrication
T girder prefabrication
prefabricating of T-shaped beams
半圆体预制
Prefabrication of Semi-circular Concrete Units
沉箱预制
caisson production
prefabrication of caisson
caisson prefabrication
沉箱预制工艺
precasting techniques of caisson
大口径预制保温管
large diameter precast insulated pipe
带状预制排水板
band-shaped prefabricated drain