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A physiotherapeutic apparatus for preventing and treating near sighted eye has a convex lens used as objective lens, lens cone, eyepiece, headgear and lens set.

一种防眼的理疗器,它有作为物的凸透筒、目,还有头套和透组,它用于人们在距离上用眼戴在眼上,可以使被物的像清楚、放大和变远。

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Crash Course Physics 速成

Say we have a lens that has a spherical face on both sides, known as a convex lens.

假设我们有个具有球面的镜头 两侧,称为凸透镜。

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世界新知焦:科技

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.

通过叫做柱状透镜的东西实现的,柱状透镜波纹状的薄板,其每个凸起处都由凸透镜(即向外弯曲的透镜)组成。

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