主起吊绞车和升降机系统可通过船底72英尺宽的洞，提升1，250吨重的管道和机械。
The main hoist winch and a system of elevators lift 1,250 tons of pipes and machinery through the 72 inches wide hole at the bottom of the boat.
还公开了一种包括所述无线通信系统的升降机系统。
A lift system including the wireless communication system is also disclosed.
论述了斜井顶部多趟管路安装施工、起重、升降机系统。
The construction, the upgrading and the elevator system of many pipelines installment on the slant well crown is elaborated.
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