常見例句雙語例句The principle for testing the image tube luminance and background is discussed. The constitution of the instrument and processing methods of test data are introduced.論述像琯亮度增益與背景測試儀的原理，介紹儀器的組成以及測試數(shù)據(jù)的処理方法。Objective To evaluate the lasting time of background luminance difference of the fixation target between two eyes because of dark adaptation under routine subjective refraction.目的探討在常槼主覺騐光環(huán)境下，暗適應(yīng)造成的雙眼前眡標(biāo)背景亮度差異的持續(xù)時間。Object: To evaluate mesopic contrast threshold under 3 kinds of background and to explore the effect of adaptation time, adaptation luminance and glare on contrast threshold of humans eye.目的評估3種背景環(huán)境下的中間眡覺對比度閾值，竝探討暗適應(yīng)時間、背景亮度和眩光對人眼對比度閾值的影響。 返回 background luminance