Objective To study the role of esophageal dynamic double contrast radiography(DDCR) in diagnosing early esophageal carcinoma(EEC).是什么意思_Objective To study the role of esophageal dynamic double contrast radiography(DDCR) in diagnosing early esophageal carcinoma(EEC).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句