cut - off frequency造句

• The tm01 mode of the coaxial bwo has no cut-off frequency, which is similar to the tem mode in the conventional coaxial waveguide
  这是因为同轴慢波结构的tm01模式有类似于tem的性质,没有截止频率。
• As a consequence of this simulation, however, the cut-off frequency of the resulting low-pass is 70.7 per cent of the specified bandwidth, and not 50 per cent
  然而这种模拟的结果是：最终的低通截止频率为特定带宽的70.7%，而非50%。
• Band elimination filter . a filter that has a single continuous attenuation band, with neither the upper nor lower cut-off frequencies being zero or infinite
  带阻滤波器。只有单个连续衰减带宽，将在上边带或下边带频率切断为零或无穷大。
• When the frequency is below than the cut-off frequency of the waveguide, the field intensity decays exponentially with distance along the waveguide and the wave is called evanescent wave
  当频率低于波导的截止频率时，电磁波在波导中与距离成指数规律衰减，是一种消失波。
• This is because the bpf is a two-pole filter; at its cut-off frequency ( when output is 50 per cent ) the output power of a true lpf of the same cut-off would be in fact 70.7 per cent
  这是因为带通滤波器是一个两极滤波器；在其截止频率下（输出为50%），真正的具有相同截止频率的低通虑波器的输出功率事实上为70.7%。
• It was the result from that the width of spectrum of the input em pulse packet was too wide, the spectrum included rather strong frequencies being above the cut-off frequency which have not been decayed
  分析认为，这是由于输入电磁波包脉冲的频谱太宽，存在较强的高于截止频率的频率，这部分频率未被衰减而直接传输所致。
• The cut-off frequency of the growth rate for the solitary waves under transverse perturbations has been analytically obtained . it is in agreement with the case p = 1 / 2 and p = 1 which have been studied previously
  二+v、二二0)来描述，并解析地得到了在横向扰动下孤波增长率的截止频率，结果与p二1/2和p二1时的解析精确解一致
• The results show that : ( a ) the influence of the groove shape on the low cut-off frequency is great at certain groove depth; the high cut-off frequency is gradually lowered from triangle profile, cosine profile to swallow-tailed profile
  结论为:(1)槽深较大情况下,槽形状对截至频率影响较大,槽形状从三角形变化到燕尾形,截至频率依次降低。
• The results show that : ( a ) the influence of the groove shape on the low cut-off frequency is great at certain groove depth; the high cut-off frequency is gradually lowered from triangle profile, cosine profile to swallow-tailed profile
  结论为:(1)槽深较大情况下,槽形状对截至频率影响较大,槽形状从三角形变化到燕尾形,截至频率依次降低。
• The results show that : ( a ) the influence of the groove shape on the high cut-off frequency is great at certain groove depth; the high cut-off frequency is gradually lowered from triangle profile, cosine profile to swallow-tailed profile
  结论为：中文摘要（1）适当槽深情况下，槽形状对高截止频率影响较大；槽形状从三角形变化到余弦形直到燕尾形，高截止频率依次降低。
• The results show that : ( a ) the influence of the groove shape on the high cut-off frequency is great at certain groove depth; the high cut-off frequency is gradually lowered from triangle profile, cosine profile to swallow-tailed profile
  结论为：中文摘要（1）适当槽深情况下，槽形状对高截止频率影响较大；槽形状从三角形变化到余弦形直到燕尾形，高截止频率依次降低。
• The shunt active power filter which uses the i p ? iqmethod and the hysteresis-based current control strategy has been simulated, and analyze the inductor and the cut-off frequency which affect the performance of shunt active power filters
  iq谐波电流检测和电流滞环跟踪控制技术的并联型有源电力滤波器进行了仿真研究,重点分析了影响有源电力滤波器补偿效果的滤波电感和采样电路截止频率。
• In order to solve this problem, this research adopts the electrical self-regulation circuit in series, on the basis of the unchanged of transfer function of electromagnetism rate transducer, extend frequency bandwidth of the transducer, improving its capability . after the self-regulation, the transducer has high passing feature and inferior lower lever cut-off frequency ( below 1 hz )
  为了解决普通电磁式速度传感器不能检测超低频振动信号的问题,本研究采用了一种串联式电子补偿电路,在保持电磁式速度传感器的传递函数性质(高通)不变的前提下,拓展了传感器的频宽,改善了传感器的性能。
• 2 . the real-time processing technique of strong ground motion data is studied in this paper . based on the research of kanamori etc ., the relation between the design parameters of recursive filter and its corresponding low frequency cut-off frequency is obtained and quantitative phase adjustment is analyzed
  本文在kanamori等人研究工作的基础上，发展了一套强震观测数据的实时处理技术，分析了递归滤波器设计参数q与所对应的低频截止频率f_c以及相位校正的定量关系。
• When the pulse width of input gaussian wave packet was reduced and the length of forbidden region retained, the result displayed the output signal distorted seriously and its spectrum changed very hard . a frequency above the cut-off frequency became the main frequency and the group velocity was below than c
  在保持截止区长度不变，而减小输入高斯波包的脉冲宽度时，模拟显示输出波形严重失真，而且，频谱也发生很大的变化，主频已变为一高于截止频率的频率，群速度小于光速c。
• The influence of msfvw bandwidth on the diffraction efficiency is also considered . for the nonuniform bias magnetic field of u-type parabola profile, when the msw frequency is less than the cut-off frequency at the edge of mo film, the effective mo interaction length reduces . the edge cut-off frequency is determined by the maximum of the nonuniform field
  对于抛物型分布(开口向上)的偏置磁场,当激发静磁波的rf频率小于边缘截止频率时,磁光作用的有效长度减小(与静磁波频率有关);边缘截止频率由不均匀磁场的最大值决定,静磁波的下限截止频率由不均匀场的最小值确定。
• The influence of msfvw bandwidth on the diffraction efficiency is also considered . for the nonuniform bias magnetic field of u-type parabola profile, when the msw frequency is less than the cut-off frequency at the edge of mo film, the effective mo interaction length reduces . the edge cut-off frequency is determined by the maximum of the nonuniform field
  对于抛物型分布(开口向上)的偏置磁场,当激发静磁波的rf频率小于边缘截止频率时,磁光作用的有效长度减小(与静磁波频率有关);边缘截止频率由不均匀磁场的最大值决定,静磁波的下限截止频率由不均匀场的最小值确定。
• Fluorescence power transfer function, three-dimensional point spread function ( 3d-psf ) and three-dimensional optical transfer function ( sd-otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory . the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut-off frequency, resolution and 3d-otf . there is a different missing-cone in the 3-d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases
  本文在sheppard和gumin等人的理论基础上，利用fourier光学成像理论，讨论了不同荧光波长对单光子和双光子共焦显微镜成像特性的影响，导出了单光子和双光子共焦显微镜的荧光功率传输函数、三维脉冲响应函数和三维光学传递函数，得到了它们在不同激发波长与荧光波长比值时具体的表达式，并且通过数值计算，得到了它们的曲线图，结果表明：随着激发波长与荧光波长比值的增加，焦斑的横向分布和纵向分布变窄，横向分辨率和纵向分辨率提高，系统的成像效果变好，当激发波长与荧光波长的比值下降到一定程度时，可以看到不同程度的失锥现象。