高频激励,HF excitation
1)HF excitation高频激励
1.The basic mechanism of the HF excitation of a CO 2 laser is discussed.讨论了高频放电激励CO2激光器的基本机理,报道了最新研制成功的高频激励横流CO2激光器的基本结构、技术特点和实验结果,该激光器低阶模输出为1。
英文短句/例句

1.The high frequency excitation algorithm for digital audio signals based on wavelet transform基于小波变换技术的数字音频高频激励算法
2.Improved Series Expand Method for Dynamics System Response under Medium and High Frequency Excitations一种中高频激励下动力系统响应的级数展开改进算法
3.Investigation of Quadrupole UHF Discharge Excitation for Xe Laser氙激光器四极特高频放电激励的研究
4.Research on Deicing Power Transmission Lines with High-frequency and High-voltage Excitation输电线路高频、高压激励融冰技术研究
5.RF excited ion laser射频激励离子激光器
6.Acoustic excitation sources, high order modes and cutoff frequencies of noise were discussed for an annular combustion chamber.论述了燃烧室的声激励源、环形燃烧室内高阶声模态及其截止频率。
7.Studies on RF-excited Waveguide CO_2 Lasers with Folded Cavity;射频激励折叠腔波导CO_2激光器的研究
8.Research on Exciting Characteristics of High Power Radio-Frequency CO_2 Laser大功率射频CO_2激光器激励特性研究
9.Reinforcing inspiration direction and enhancing inspiration effect;增强激励针对性 提高企业激励效用
10.Using Stimulation Theory to Promote the Efficiency of Stimulation-system for Hotel;运用激励理论提高酒店激励的有效性
11.Purpose: Audio frequency general purpose ,driver stage amplifier applications.用途:用于音频放大,激励级放大。
12.Study of Tire Dynamic Properties under Uneven Road and Medium Frequency Excitation;不平路面中频激励轮胎动态特性研究
13.Visual Spectrum Analysis with Chirp Signal as Excitation;以Chirp信号激励的虚拟频谱分析仪实现
14.Design of X-Band Frequency Synthesizer Based on DDS driving PLLDDS激励PLL的X波段频率合成器设计
15.Design and implement the frequency synthesizer of DDS driven PLLDDS激励PLL频率合成器的设计与实现
16.Study on low frequency exciting source in FDTD simulationFDTD计算中关于低频激励源问题的研讨
17.Guidance and Inspiration--On Strengthening the Mechanism of Inspiration in College Education;引导与激励——强化高职高专教育的学习激励机制
18.An Analysis of the Motivation Issues in the Reward System of University Academic Research高校科研奖励机制中的激励问题分析
相关短句/例句

UHF excited特高频激励
3)high-frequency signal injection高频信号激励
4)multi-frequency excitation多频激励
1.Super-harmonic resonance of Duffing-van der Pol system to multi-frequency excitation;多频激励下达芬系统的超谐共振
2.In this paper,the main resonance of nonlinear Duffing-van der Pol system to multi-frequency excitations is investigated,and the MultiScale Method is used to obtain the first-order approximate solution.首先利用多尺度法分析了Duffing-van der Pol系统在多频激励下的主共振响应,得到了该系统的一次近似解。
5)multi-frequency excitations多频激励
1.The method of multiple scales and singularity theory are used to investigate the combination resonance and bifurcation of a nonlinear vehicle suspension system with multi-frequency excitations.针对两自由度 1 /4汽车悬架模型 ,用多尺度法研究了具有位移和速度三次方项的滞后非线性汽车悬架在多频激励下的组合共振 ,并用奇异性理论进行了分析。
6)exciting frequency激励频率
1.The influences of the heat transfer condition outside an oscillatory tube on the optimum exciting frequency and the characteristics of the oscillatory flow inside the tube have been experimentally investigated.实验研究了管外换热状况对振荡管最佳射流激励频率及管内振荡流特性的影响。
延伸阅读

甚高频和超高频多普勒雷达  工作在30~3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1~100公里,所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度(见大气静力稳定度)等大气动力学参数的铅直分布。    原理  这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射;②稳定大气分层结构对入射电磁波的部分反射;③有时出现于中层大气的自由电子对电磁波的散射;④中层大气中的流星余迹散射。散射体积内空气的运动,使雷达回波具有多普勒频偏。    结构  MST 雷达的结构和气象多普勒雷达大致相同。其特点在于:它们一般配备了大型天线(天线阵),有些甚高频段雷达的天线阵,尺度达 30~200米,采用半波振子阵或八木天线振子阵,以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线,这类雷达的发射功率在几百千瓦至 2兆瓦之间,发射功率和天线面积的乘积值在106~1010瓦·米2之间。此外,为获得高灵敏度和高空间分辨率,在脉冲发射体制和回波数据处理方面,也采取一些技术措施。    用途  利用回波的多普勒频谱可以进行下述各项测量:①探测大气风场的铅直分布。同一仰角,空间分辨率约为 150~1000米,采用脉冲压缩技术后,分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后,可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前,甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化,而不能给出三维空间分布资料。    参考书目   K.S.Gage,B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59,No.9,pp.1074~1093,1978.