安装在设备外壁的一般选择正作用形式的翻译：General select being installed on the device external form 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Equipment installed in the outer wall of the role of the general form of selection is

General select being installed on the device external form

Installs is affecting the form in the equipment outer wall general choice

equipment installed in the general options outside wall forms are role

General select being installed on the device external form