The lower ends of four legs of the stent are equipped with spiral lifting support legs.
在支架的四根腿下端安装有螺旋升降支脚。
The utility model relates to a lifting support device which comprises a main frame body which has a volume set space;
本实用新型是有关一种可升降支承装置,包括一主架体,设有容设空 间;
The diving chamber is a watertight compartment with air pipes, the lifting support is a girder structure, and the lead rails are arranged under and below the lifting support;
潜水舱是带有通气管的水密舱,升降支架为桁 架结构,升降支架的上下设有导轨。
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