To introduce and explain the structure and working method of a new type of fall-proof machine, used in small mine, which meets the weight demand of the hoisting system.

介绍一种新型可以满足小型矿井提升系统重量要求的防坠器结构设计和工作原理；

youdao

To introduce and explain the structure and working method of a new type of fall-proof machine, used in small mine, which meets the weight demand of the hoisting system.

介绍一种新型可以满足小型矿井提升系统重量要求的防坠器结构设计和工作原理；

youdao