Rino里诺RIabbr.折光指数（=refractive index）abbr.罗得岛（=Rhode Island）abbr.无线电惯性制导航系统(=Radio-Inertial Guidance System)Riedel's disease反极性磁铁Riukiu Scops Owln.琉球角鸮rinsing solution水洗溶液Rivinus rs gland里维纳斯氏腺Riedel rs struma板样甲状腺炎rill erodibility细沟侵蚀Rissa tridactylan.三趾鸥(鸥科)Risoba prominensn.显长角皮夜蛾rising-voltage升压Riemann integral黎曼积分