Safety and efficacy of percutaneous balloon mitral valvuloplasty in patients with severe mitral stenosis and thrombus in the left atrial appendage是什么意思_Safety and efficacy of percutaneous balloon mitral valvuloplasty in patients with severe mitral stenosis and thrombus in the left atrial appendage在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句