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- WVD Method for Analyzing Modulated Period Signature of Propeller - driven Aircraft 螺旋桨飞机调制周期特征的WVD分析法
- Modulated period signature 调制周期特征
- A method of target classification based on JEM periodic signature is proposed. 提出了基于JEM周期特征的目标分类方法。
- XRD,nano indenter and profiler were employed to investigate the influence of the modulation period on microstructure,mechanical properties of the coatings. 通过XRD和纳米力学测试系统以及摩擦磨损仪分析了该体系合成以后的晶体结构,以及调制周期对机械性能的影响。
- The Ti/TiN multiplayer with super hardness has been deposited by adjusting the modulation period, and the maximum of hardness is 4799 kgf/mm2. There are two reasons in improving the hardness of films. 通过调整Ti/TiN薄膜的调制周期和周期比,制备了具有超硬特性的Ti/TiN多层薄膜,显微硬度最高可达Hk4799 kgf/mm~2;
- The influence of modulation period and working pressure on structures and mechanical properties of the ZrC/ZrB2 multilayered films are analyzed by using XRD,SEM,profiler and nano indenter. 通过XRD,SEM和表面轮廓仪以及纳米力学测试系统,分析了调制周期和工作气压对多层膜生长结构和力学性能的影响。
- Study on the Periodic Signature Modulated by Rotating Structure of Aircraft in the Air-Defense Radar 防空雷达飞机目标调制周期特征的研究
- 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。
- 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。
- 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。
- 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?
- 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。
- She'll be away for an indefinite period. 她将离开一段时间,何时回来未定。
- This was the most difficult period of his life. 这是他一生中最艰难的时期。