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英语例句库

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.

一种防治近视眼理疗器，它有作为物、筒、目，还有头套组，它用于人们在近距离上长时间用眼时戴在眼上，可以使被视物像清楚、放大变远。

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原声例句
Crash Course Physics 速成课物理

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

假设我们有一个具有球面的镜 ，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.

这是通过一种状透镜的东西实现的，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。

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