Objective To study preventive method of residual fistula in surgery of closure of VSD;and the standard of judging prognosis of residual shunt by ultrasound.是什么意思_Objective To study preventive method of residual fistula in surgery of closure of VSD;and the standard of judging prognosis of residual shunt by ultrasound.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句