The text detailedly introduced crown block, running system, availability work period of bridge girder erection equipment and improve case for precast beams install.
详细介绍了对双导梁式架桥机天车、行走系统、有效工作长度及预制梁安装就位的改进情况。
In-situ concrete walling, like precast concrete block walling, is being used more these days than years ago, mainly because of the speed of erection.
同混凝土块材墙体一样，近年来，越来越多的建筑都使用现浇的钢筋混凝土实墙体，主要原因是施工速度快。收藏。
In-situ concrete walling, like precast concrete block walling, is being used more these days than years ago, mainly because of the speed of erection.
同混凝土块材墙体一样，近年来，越来越多的建筑都使用现浇的钢筋混凝土实墙体，主要原因是施工速度快。收藏。
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