规定要对起重机、吊机、吊索进行安全检查。
Inspections should be conducted on cranes, hoists, and slings.
在开箱·搬运·安装时，请使用吊滑轮，起重机，叉式升运机等辅助设备。
When opening, carrying or installing it, please use block and tackle, chain block, fork lift truck or other assistant devices.
对起重机吊重系统的动力学分析是解决起重机快速对位问题的基础。
Dynamic analysis for the crane-load or the trolley-load system is the foundation for solving the problem of the cranes fast contraposition.
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