Erosive esophagitis and hiatal hernia were identified in 18 and 70 patients, respectively.腐蚀性食管炎以及食管裂孔疝分别为18和70例.The occurrence of peptic ulcer in some pa - tients with hiatal hernia may necessitate considerationof both ...
A new backfire antenna fed by a bifilar backfire belix is described in this Paper.本文提出一种用双线背射螺旋作馈源的新式背射天线.The President's tactics could backfire...总统的策略可能会适得其反。A victory for Mr Bush and the internationalists could e...