Methods: Study the features of X-ray findings of 7 cases about lithiasis in the elder hiatal hernia sac with double contrast barium meal.是什么意思_Methods: Study the features of X-ray findings of 7 cases about lithiasis in the elder hiatal hernia sac with double contrast barium meal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句