Objective To investigate the ultramicroscopic changes of cryopreserved porcine mitral valve and to explore the surgical implanting technique of this stentless mitral homograft in tricuspid position.是什么意思_Objective To investigate the ultramicroscopic changes of cryopreserved porcine mitral valve and to explore the surgical implanting technique of this stentless mitral homograft in tricuspid position.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句