求翻译：在安装机器顶部的走线槽时同样要分清左右，如图，上部的为左侧走线槽，尾端只有2个方孔，而右侧走线槽尾端有三个方孔。是什么意思？

Wireway to install the machine at the top of the same to tell left from right, as shown in the upper part of the left to go trough the end of only two square hole, while the right side of the end of the wire tray has three square hole.

On top of the machine on Line slot is also to distinguish between right and left, as shown in the upper left side, go online slot at the end only 2 square hole, and the right side go online slot at the end there are three square holes.

About installs the machine crown walks the trunking similarly must distinguish clearly, like the chart, upside is left side walks the trunking, end only then 2 square edged orifices, but right flank walks end the trunking to have three square edged orifices.

Installation alignment slot on the top of the machine the same way when you want to distinguish between left, as in figure, to the left at the top of the line slot, trailer, only 2 square holes, and end alignment slot on the right side there are three square holes.

正在翻译，请等待...