求翻译：安装机头墙板的白色罩壳，注意左侧罩壳上的孔要对准墙板上的圆孔。用M6X12的外六角螺钉把罩壳固定在墙板上。注意机头的罩壳宽度比较小，为7.5cm，有2个附件。是什么意思？

The white casing head wallboard is installed, the hole left on the cover to align the hole in the wall on the M6x12 hex screw casing fixed in the wall. Attention to the nose of the casing width is relatively small, 7.5cm, two annexes.

Installation of the head wall of the white shell, note that the left shell holes in the wall plate to align the holes. Use M X 12 6 OF THE 6 corner screws out to secure the hood on the panels. Note that the canopy width is small, 7.5 cm, with 2 attachments.

Installs the nose wall plate the white lagging, left side the attention in the lagging hole must aim at on the wall plate the round hole.Fixes with the M6X12 outside hexagon bolt the lagging on the wall plate.Pays attention to the nose the lagging width quite to be small, is 7.5cm, some 2 appendices

Install wall plate white casing in the nose, attention to the hole you want to align the cover on the left round hole in the wall panels. Hexagon screws M6X12 attach the hood to the wall plate. Shell width of the note head is relatively small, 7.5cm, and 2 annexes.

正在翻译，请等待...