短語(yǔ)詞組短語(yǔ)duodenal malignant obstruction 十二指腸惡性梗阻congenital duodenal obstruction 先天性十二指腸梗阻duodenal obstruction sign 十二指腸梗阻征gastric outlet and duodenal obstruction 胃出口 返回 duodenal obstruction