The mean number of medications used per patient preoperatiely was 1.53 in the phaco-ECP group and 1.20 in the phaco group.是什么意思_The mean number of medications used per patient preoperatiely was 1.53 in the phaco-ECP group and 1.20 in the phaco group.在线翻译_英语_读音_用法_例句