Some pulsars keep time better than the earth's most accurate clocks.某些脉冲星发送脉冲比地球上最精确的时钟都准时。Most clocks and watches in this shop are in luminous paint.这家商店出售的大多数钟表都涂了发光漆。Ignoring feelings of tiredness knocks our body...
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...