The reflecting power of the earth is primarily dictated by the proportion of cloud and snow cover . 地球的反射率主要是由云和雪覆盖的部分决定的。
These tools and weapons reflect power relations through their appropriation of advanced techniques and rare materials 这些器具通过占有最高超的技术和珍贵的材料,体现出权力的力量。
The mutual coupling between phased array antennas elements causes the loss of reflected power . following the changes of scanning angle , mutual coupling between elements will also change , so the comensation of mutual coupling should become difficult 相控阵天线单元间由于互耦效应引起的反射功率损耗,随着扫描角的变化而随之发生变化,这给互耦补偿带来了极大地困难。
At different scanning angles , by analyzing the effects that the surrounding elements on the middle one , we conclude that the reflected vote of the middle element decreases , that ’ s the loss of reflected power decrcases , so the input power will increase 结果发现,在不同扫描角下,中心阵元的反射电压得到减小,因此,达到了反射功率损耗减小,传向天线单元输入端功率增加,天线性能提高的目的。
3 . the new microwave power supply ( mps ) can work in vacuum and its power measurement is convenient . the output power could be adjusted with the change of control voltage , and the reflecting power could be gotten by measuring the output voltage of attenuator and detector ( 3 )可在真空下稳定工作的新型微波源功率的测量较为方便,通过改变控制电压的大小可以调节输出功率,通过测量衰减检波器的输出电压信号可实现反射功率的测量。