中文: abbr. rapid beam deflector 快速波束偏转器; required beginning date 必需的初始日期; right border of dullness 右浊音界(心脏叩诊)
中文: abbr. red blood cell (count) 血红细胞(数); red blood corpuscle 红血球; relative biological effectiveness 相对生物原效应
中文: abbr. radar beam sharpening element 雷达波束锐化部件; Robinson backscattered electron detector 罗宾逊背(向)散射电子探测器