为什么网上有些投影仪才几百块那么便宜？质量是不是很一般？（贵的和便宜的投影仪区别在哪啊
@xijiangyue 镜头，还有电子元件寿命差别，成像差距也挺大
QOTO: Question Others to Teach Ourselves An inclusive, Academic Freedom, instance All cultures welcome. Hate speech and harassment strictly forbidden.
