单词	hypermetropia
释义	hypermetropia(hyperopia) Long-sightedness. A vision defect in which the lens of the eye is unable to accommodate sufficiently to throw the image of near objects onto the retina. It is caused usually by shortness of the eyeball rather than any fault in the lens system. The subject requires spectacles with converging lenses to bring the image from behind the retina back on to its surface. See illustration. Hypermetropia
随便看	plano-convex lens plasma plasma oscillation plasmon plasticity pleochroic plutonium Poincaré group Poincaré sphere Poincaré stresses point defect point discharge point-contact transistor poise Poiseuille's equation poison Poisson's ratio polar coordinates polar molecule polar vector polarimeter polarizability polarization polarization of light polarizer

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。