“double-concave lens”的概念、定义、翻译、参考文献-科学参考

单词	double-concave lens
释义	double-concave lens [¦dǝb·ǝl ¦kän´kāv `lenz] ^OPTICS A lens having surfaces that are adjacent portions of nonintersecting spheres whose centers lie on opposite sides of the plane of the lens. Also known as biconcave lens.
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