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...
They can't destroy truth without destroying each and every one of us.除非他们将我们赶尽杀绝，否则真理不灭。Frogs eat pests which destroy crops and carry diseases.青蛙吃破坏庄稼、传播疾病的害虫。After the killing, he calmly lit a fire to destroy evide...
If you build more plastics into cars, the car lasts longer.如果汽车采用更多塑料元件，寿命会更长一些。New Japanese cars averaged 13 km to the litre in 1981.1981年，新型的日产汽车平均每升汽油能跑13千米。The museum will have a permanent exhibition of 60 vintage ca...
实验者已经成功控制了心跳的速度和频率。Experimenters have succeeded in controlling the rate and regularity of the heartbeat.我们都知道太卖命了会导致心跳加速。We all know that when we exert ourselves our heart rate increases.我能听见自己的心跳.I could hear the beatin...