柯林斯詞典gray /ɡre?/ 1. COLOR [美國(guó)英語(yǔ)] →see grey 2. N the derived SI unit of absorbed ionizing radiation dose or kerma equivalent to an absorption per unit mass of one joule per kilogram of irradiated material. 1 gray is equivalent to 100 rads 格雷; 國(guó)際單位制中吸收離子輻射量的一個(gè)單位 ( symbol: Gy) 返回 gray劍橋詞典US spelling of grey （grey 的美式拼寫(xiě)） 返回 gray