情侶太阳眼镜小众小众蓝色太阳眼镜★免邮★高清日韩uv400太阳眼镜

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何为偏光? 偏光又叫做偏振光,偏光片用的是偏振片,是一种只允许特定方向光线通过的片,这样就过滤掉了漫射光等比较刺的杂光,这样看的更楚。

https://www.zhihu.com/question/20296208

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