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半波长的英文

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"半波长"怎么读用"半波长"造句

英文翻译手机手机版

  • half wave length
  • half-wave length

例句与用法

  • Design of a half - wave vibration system for ultrasonic drilling
    超声振动钻孔半波长振动系统的设计
  • Wire of half wavelength
    半波长导线
  • Eleminating the doa ambiguity has to be considered when the interval between two array elements is larger than the half of the wavelength
    当阵元间距大于半波长时,必须考虑相应的解模糊问题。
  • The wave frequency has close relationship with the train ’ s speed . the train ’ s speed is more rapid , the frequency of wave is also higher , and the wavelength is shorter . if the distance between two wheels on the same rail is equal to
    如果两个车轮之间的距离等于半波长的奇数倍,那么当这两个车轮所产生的振动波传播到钢轨上同一点的时候,所引起的振动在该点的相位正好相反,振动叠加后的和位移将为零。
  • In this thesis , our work is focused on analyzing the effects of mutual coupling between elements of the thin dipole antenna array . the effects of mutual coupling on the antennas pattern synthesis and the amplitude - phase consistency of the input impedance of the uniformly - space liner array are presented . a new method that used the mutual coupling to synthesize the pattern is been given
    本文就是以此为出发点,将半波长细线对称振子线天线阵作为研究对象,以分析天线阵列的互耦影响为核心,讨论互耦对几种方向图综合技术的影响,并从两种不同的角度提出了对阵元互耦的校正方法。
  • A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide . a kind of expression of approximate solution for domain mode of the new waveguide , including symmetric , unsymmetric arc , parabolic arch , hyperbolic arch , elliptic arch , etc . , is constructed by using boundary condition of mental waveguide , variational method and boundary element method . by using the equivalence principle , an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived , and the result is shown . although this solution is approximate , it can solve the problem in designing the slotted antenna of such conformal waveguide
    把矩形波导一个宽面外突成均匀曲面构成的新波导统称为共形波导.利用金属波导边界条件、变分法、边界元素法构造这种新波导中主模场的一种近似解表达式,包括曲面横截线为对称、非对称圆弧,抛物线弧,双曲线弧,椭圆弧等.然后根据等效原理,推导非对称圆弧矩形波导曲面上窄的纵向半波长缝隙的等效谐振电导的近似计算公式,给出计算曲线.这种解虽然是近似的,但却能解决这类共形波导缝隙天线的工程设计
  • The variation of db magnitude attenuation and phase delay of reflection is uniformly proportional to distance along the line toward the direction of reflection , where the phase delay is 360 degree per wave length , the db attenuation per meter is twice the one way db attenuation per meter of forward or backward wave
    沿传输线之反射,即反向传播与正向传播电压沿传输线之相量比,其相位落后及分贝衰减沿反射方向之变化则正比于线长,相位落后为每半波长三百六十度,每米之分贝衰减为正向波或反向波单程每米之分贝衰减之两倍。
  • And more aperture extension is achieved in this novel esprit - based two - dimensional angle estimatio n scheme using a uniform rectangular array of vector hydrophones spaced much farther apart than a half - wavelength . this proposed scheme and the attendant vector - hydrophone array outperform a uniform half - wavelength spaced pressure hydrophone array with the same aperture and slightly greater number of component hydrophones by an order of magnitude in estimation standard deviation
    结合实际的应用情况,对矢量水听器构成的阵列进行了初步的探讨,利用本文前面部分所分析的基于单矢量水听器的方法,实现了阵元间距突破半波长上限的局限,并解决了角度估计的循环模糊问题,以较小的硬件代价和运算代价实现阵列孔径的扩展,提高估计精度。
  • Second , we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability . we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger , that is to say , they benefit the occurance of symmetric instability . third , we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane . non - hydrostatic balance and filiter model
    第二,讨论了环境位温与热成风因子对中尺度对称不稳定的影响。运用解析的方法求出了扰动流函数的表达式和对称不稳定的判据,发现环境参考位温随高度的变化与热成风因子使得对称不稳定临界理查逊数及扰动的临界半波长都变大,这有利于对称不稳定的发生。第三,采用f平面、非静力平衡、滤声波模式,讨论了中尺度垂直环流非线性摄动分析及演变方程。
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