This is made possible through something called a lenticular lens – a corrugated sheet in which each ridge is made up of a convex – or outward-curving – lens.
这是通过一种叫做柱状透镜的东西实现的,柱状透镜是一种波纹状的薄板,其每个凸起处都由凸透镜(即向外弯曲的透镜)组成。
英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。