Preliminary study of real-time three-dimensional echocardiographic planimetry of the mitral valve area before and after percutaneous balloon mitral valvuloplasty是什麼意思_Preliminary study of real-time three-dimensional echocardiographic planimetry of the mitral valve area before and after percutaneous balloon mitral valvuloplasty在線翻譯_英語_讀音_用法_例句