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本文叙述了一种测量边缘对比度(敏感度)的装置。其作用及功能和Kerbaken的卡片相同,但制作方便,质量易于保证。
This article describes a device that measures edge contrast (sensitivity). Its function and function are the same as that of Kerbaken’s card, but the production is convenient and the quality is easy to guarantee.