In one of the final stages of quality control, a technician projects a uniform pattern through the lens onto the wall.

在最后质量控制阶段，技师会透过镜头在墙上投射相同式样的光线。

youdao

In one of the final stages of quality control, a technician projects a uniform pattern through the lens onto the wall.

在最后质量控制阶段，技师会透过镜头在墙上投射相同式样的光线。

youdao