Temporary counterclockwise atrial flutter was induced by pacing at coronary sinus ostium in 1 case with clockwise block in the isthmus.是什么意思_Temporary counterclockwise atrial flutter was induced by pacing at coronary sinus ostium in 1 case with clockwise block in the isthmus.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句