This arm is adjustable lengthwise across the post to vary the distance between the light socket and the post.

这手臂上的可调更改后的纵向之间的灯头和职位的距离。

youdao

This arm is adjustable lengthwise across the post to vary the distance between the light socket and the post.

这手臂上的可调更改后的纵向之间的灯头和职位的距离。

youdao