upper PCs上位PC机
upperadj.较高的;上面的;上部的n.鞋帮;上铺n.兴奋剂;令人兴奋的经历
Upper urinary tract dilatation上尿路扩张
upper ischemic flow thereshold缺血阈值上限
Upper respiratory tract cavity上呼吸道腔
upper valley of Minjiang River岷江上游
upper and lower bound theorems上下限定理
upper limit cut-off frequency上限截止频率
Upper Stage Guidance Experiment末级制导实验
upper-atmosphere aerodynamics高层大气空气动力学