柯林斯词典gray /ɡreɪ/ 1. COLOR [美国英语] →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; 国际单位制中吸收离子辐射量的一个单位 ( symbol: Gy) 返回 gray剑桥词典US spelling of grey (grey 的美式拼写) 返回 gray