假如是高空作业，那装置的时分一定需求戴平安安装。做好防腐处置和排水处置，不能呈现漏水的状况。

If it is high-altitude operations, the device must wear safe installation time. Do anti-corrosion treatment and drainage disposal, can not show the status of leakage.

youdao

假如是高空作业，那装置的时分一定需求戴平安安装。做好防腐处置和排水处置，不能呈现漏水的状况。

If it is high-altitude operations, the device must wear safe installation time. Do anti-corrosion treatment and drainage disposal, can not show the status of leakage.

youdao