随着科学技术发展的需要,国际辐射单位委员会(ICRU,MKPE)提出建议:采用新的国际制单位以逐步取代老的单位,至1985年年底前,着重采用新的单位。放射性活度的专用单位为贝可勒尔(Becquerel,Бек-керель,简称贝可,Bq,Бк),以替代居里(Curie,Ci);吸收剂量的专用单位为格雷(Gray,Γрей,简称格雷,Gy,Гй)以取代拉德(rad);剂量当量的专用单位为西弗尔特(Sievert,Зиверт,简称为西弗尔 With the development of science and technology, the ICRU (MKPE) proposed to adopt a new international unit to gradually replace the old one. By the end of 1985, the new unit will be emphatically adopted. The specific unit of radioactivity was Becquerel (Бек-керель, Beq, Bq, Бк) in place of Curie (Ci); the special unit of absorbed dose was Gray (Γрей, Gray, Gy, Гй) to replace Rad (rad); the special unit of dose equivalent is Sievert, Зиверт