投影仪选购总功率 http://tj4k.com/archives/1202 投影仪距离计算器:http://tj4k.com/archives/436 个人主页:https://space.bilibili.com/424964 自购测评小明V1 Ultra,3千元?LCD原生4K?DIY过真4K单LCD的UP深度讲解!