Syren.赛尔SYabbr.平方码(=square yard)abbr.主发动机偏转(=sustainer yaw)Syzeuxis neotritonarian.新圣盘尺蛾syphonic drainage pipe虹吸雨水管syllabic superposition音节叠加Syzygium oblancilimbumn.倒披针叶蒲桃Syconycteris australisn.无花果蝠syphilid varioliformis天花样梅毒疹Syzygium euonymifoliumn.卫矛叶蒲桃sychronized cinecamera同期摄影机Systolic peak velocity收缩期速度峰值systolic ejection rate收缩期射血率, 收缩期射血速率, 收缩期喷射率