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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.

一种防治近视眼的理疗器,为物的凸透筒、目,还有头套和透组,在近距离上长时间用眼时戴在眼上,可以使被视物的像清楚、放大和变远。

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orthostatism, orthostereoscope, orthostereoscopy, orthostichy, orthostigmat, orthostyle, orthosurface, orthotast, orthotaxy, orthotest,

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3G, 401(K), a,

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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.

假设我个具有球面镜头 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.

这是通过种叫做状透镜东西实状透镜是种波纹状薄板,其每个凸起处都由凸透镜(即向外弯曲透镜)组成。

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orthotropous, orthotropy, orthotype, orthovanadate, orthovoltage, orthowater, orthropsia, orthros, ortizon, ortolan,

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3G, 401(K), a,
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