Rier里尔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)rivinian notch鼓切迹Rivinus' glandRilsan coating尼龙-11粉末涂料rising limiter升程限制器Rieger Begonia丽格海棠rinsing bottle冲洗瓶Riedel disease里德尔病(板样甲状腺炎, 慢性甲状腺肿)riemann tensor黎曼张量rinsing module冲洗组件rising voltage升压