gy 基本解释 Guyana 圭亚那;gy 英英释义 noun 1. the SI unit of energy absorbed from ionizing radiation equal to the absorption of one joule of
gy 基本解释 Guyana 圭亚那;gy 英英释义 noun 1. the SI unit of energy absorbed from ionizing radiation equal to the absorption of one joule of