gray

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)