求翻译：白雪4K&3D纳米高清投影银幕与爱普生的高端工程投影机配套系统，即使在演讲大厅、大型会议室和礼堂，也能投射出高质量的高清图像。爱普生此种投影机型首次采用了以往只在家庭影院投影机中使用的水晶高清技术和电影滤镜技术，所以影像的对比度更高，色彩还原度更优异，画面更平滑清晰；是什么意思？

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