光密媒質(zhì)thick: adj. 1.(opp. thin)厚的;(樹枝)粗大的 ...medium: n. (pl. -dia ) 1.媒介物;傳導(dǎo)體;媒質(zhì), ...optically thicker medium: 光密介質(zhì)medium, optically denser: 光密介質(zhì)medium, optically thinner: 光疏介質(zhì)下載手機(jī)詞典可隨時隨地查詞查翻譯