单词	biconvex
释义	biconvex /bʌɪˈkɒnvɛks / adjective Convex on both sides.The crystalline lens, which provides approximately 30% of the refractive power, is biconvex and has the ability to change its shape to increase or decrease its focusing power.... Their molds demonstrate that lenses were numerous, biconvex, hexagonal in outline and arranged in an hexagonal close-packing system. The posterior chamber is separated from the vitreous body by a transparent biconvex lens.
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