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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.

一种防治视眼的,它有作为物的凸透筒、目,还有头套和透组,它用于人们离上长时间用眼时戴眼上,可以使被视物的像清楚、放大和变远。

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lashings, Lashio, lashkar, lashless, lash-up, lashy, lasidium, LASIK, lasing, Lasiocampidae,

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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.

假设我们有一个具有头 两侧,称为凸

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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东西实现,柱状是一种波纹状薄板,其每个凸起处都由凸(即向外弯曲)组成。

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L-asparaginase, laspartomycin, laspring, lasque, LASR, lass, Lassa, Lassa fever, Lassa virus, lassalite,

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3G, 401(K), a,
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