External calibration is key method used for spaceborne SAR antenna onboard measurement.天线外定标是实现星载SAR天线方向图在轨测试的主要手段.These results are significant for the SAR design and application.其结果对于无人机载小型SAR的设计和应用都有重要意义.High resoluti...
High resolution spaceborne SAR gives new challenge to radiometric calibration.高分辨率星载SAR技术的发展,对辐射定标提出了新的挑战.External calibration is key method used for spaceborne SAR antenna onboard measurement.天线外定标是实现星载SAR天线方向图在轨测试的主要手段...
又有29,100人加入了失业大军。Another 29,100 people have joined the dole queue.无枪炮或缺水的城市在大军围攻时是无法自卫的.A city without guns or water is defenseless before an army.大军压境.A large enemy force is bearing down upon the border....
无穷级数的收敛性与发散性与此概念有关.Convergence and divergence of infinite series depend upon this concept.我们用一块负透镜,它将使光线发散一些.We introduce a negative lens which will diverge the rays a bit.高辐射功率的光束会有高的发散度.A beam of high radiant power wil...
能在肠胃里迅速发酵的食物是绝佳的天然通便剂。Foods that ferment quickly in the stomach are excellent natural laxatives.人工甜味剂山梨糖醇有通便作用。The artificial sweetener sorbitol has a laxative effect.医生们尝试用通便药物催泻以使他退烧。The doctors attempted to reduce his...
Amnesty workers have been barred from Sri Lanka since 1982...从1982年起，大赦国际的工作人员就被禁止进入斯里兰卡。Sri Lanka had considerable scope for influencing world prices for tea in the early 1960 s.在六十年代初期,斯里兰卡有相当大的力量影响世界茶叶的价格.Burma is nor...