吊运机是起重机械的一种。
制作龟纹石假山？需要的机械：吊机，挖机，吊带，铁锹等。
Making the moire stone rockery? The required machines: crane, excavator, sling, shovels etc.
单点吊机已经成为舞台栅顶上不可或缺的一种机械设备。本文介绍了三种形式的单点吊机，并且从用途的角度做了详细阐述。
The point hoists are necessary equipment for stage grid. Three types of point hoists were introduced in this paper, with their specific applications presented in details.
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