Syl西尔SYabbr.平方码(=square yard)abbr.主发动机偏转(=sustainer yaw)sylvosteppe森林草原sychlophonen.旋调管syphon gage虹吸气压计Syrovatskiy瑟罗瓦茨基Syroyezhkin瑟罗耶日金syring pump微量注入泵syssiderite石铁陨石syphiloderm梅毒疹syllabariumn.音节表(日语假名表)syringidine二甲花翠素