In order to ensure the installation precision of steel structure, the overall transformation of the truss is calculated and monitored during the hoisting.

为了保证钢结构安装精度，在吊装过程中，对桁架的整体变形进行了计算和监测。

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Operate hoisting and lifting devices such as cranes, jacks and tractors to position machinery and parts during the installation, set-up and repair of machinery.

在安装，设置及维修机器过程中，操作起重设备，如起重机，千斤顶和拖拉机来放置机械或部件。

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This paper introduces a new type of hoisting machine's control system, and expounds the overall design, equipment selection, operation process and installation of this system.

介绍了一种新型的提升机控制系统，阐述了其总体设计、设备选型、工作过程及安装。

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