This paper has introduced a new multi-function testing equipment development of speed governor of elevator.

本文介绍了一种新研发设计的多功能电梯限速器自动检测设备。

youdao

This paper has introduced a new multi-function testing equipment development of speed governor of elevator.

本文介绍了一种新研发设计的多功能电梯限速器自动检测设备。

youdao