... photometer等反衬场光度计 equality of luminosity photometer等亮度场光度计 equality of brightness photometer等亮度光度计 ..
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等亮度场光度计 equality of brightness photometer; equality of luminosity photometer 分立视场光栏孔径 discrete field-stop aperture .
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等亮度光度计
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等亮度测光器
等辉度测光器
等视亮度光度计
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