The superior part was mounted with the help of the bargecrane that was specially constructed for that purpose.
上层部分在驳船起重机的协助下已架好，将起到特别的作用。
2
The advanced hoisting technique and control method of prefabricated box girder over sea including spreader gear design, floating crane improvement and transport barge have been expounded in details.
详细阐述了预制箱梁海上新的吊装工艺和控制方法，包括吊具设计、浮吊改造、运输驳改造。
3
A giant crane and a barge have already been brought to pull the stricken airliner.