Syren.赛尔SYabbr.平方码(=square yard)abbr.主发动机偏转(=sustainer yaw)Sytems Support Branch系统支助科syllabic manipulation音节操作法Syzygium acutisepalumn.尖萼蒲桃syphilitica retinitis[医] 梅毒性视网膜炎Syagrus romanzoffianan.金山葵Syzeuxis miniocalarian.小花盘尺蛾sybarea physical unit子域物理单元systolic hypertension收缩性高血压Syzygium tenuirhachisn.细轴蒲桃syphilitic stomatitis梅毒性口炎