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- However, the optimal results being a statistical average, the antenna pattern of random phasing is unsteady with the scanning angle and scanning period, so it is not easy to form the actually needed codes for control of the antenna scanning. 应用遗传算法对随机馈相方案进行优化，能有效抑制寄生副瓣的出现，形成扫描空域确定的波控代码，实现相控阵波束无惯性的精确指向。
- Now, it is proved here by studying the mean scan period of netted radar systems.This is especially important for studying the ECCM capability and evaluation rule of netted radar systems. 通过对雷达网系统平均扫描周期的研究，从理论上证明了雷达网系统具有航迹快速起始的性能，这对于研究雷达网系统的反电子对抗性能和评估准则具有特别重要的意义。
- Study of the Mean Scan Period of Netted Radar Systems 雷达网系统扫描周期的研究
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- The doctors gave him an ultrasonic brain scan. 医生给他做了脑部超声波扫描检查。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- effective scanning periodic ratio 有效扫描周期比
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- The second scan revealed a brain tumor. 第二次扫描显示出一个脑瘤。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- I scan Time magazine while wait at the doctor's office. 在医生的诊所等的时候，我翻看时代杂志。
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- Did you scan the headline Green Slated for the Presidency? 你有没有看格林被提名为总统候选人的大标题?
- She'll be away for an indefinite period. 她将离开一段时间，何时回来未定。
