8 balancing head is not opposite photoelectric light paper, photoelectric head mirror, photoelectric position deviation caused by angle.

动平衡机光电头未对正反光纸，光电头镜面模糊，光电头位置偏斜引起角度偏移。

youdao

Using a mirror, check your head for hair loss.

照一下镜子，看下你的头上有没有掉头发。

youdao

Two spider-webbed bullet holes cracked the smooth surface of the wall-sized mirror behind the bar. A third whizzed by Timko's brow, to punch a hole in the stuffed buffalo head mounted on the wall.

酒吧后面整面墙大小的镜子光滑的表面上多出两个蛛网似的弹孔，第三发子弹擦过蒂姆科的额头，在墙上的野牛头标本上钻了一个洞。

youdao

From time to time I stopped before a polished mirror to turn my head this way and that.

NEWYORKER: Miracle Polish

All day at work I thought of nothing but those shining surfaces, like coins catching the sun, and when I came home I went from mirror to mirror, striking poses, turning my head from side to side.

NEWYORKER: Miracle Polish

The collie was hanging its head out the window, obstructing the driver-side mirror, she says.

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