propagation distance meaning in English
传播距离
Examples
- At present , there are all kinds of digital program exchange systems , but these devices are of the following faults : 1 relatively short propagation distance
目前，数字程控调度交换系统虽然品牌众多，但都具有如下特点： 1调度平台发出的信号传输距离短。 - When the experimental frequency is above the critical frequency of 0 . 5 mhz , that the measured velocities are phase velocities must demand that propagation distance in the anisotropy media is less than two times of the transducer ' s diameter
以0 . 5mhz频率为界，大于此频率时，只要各向异性样品的传播距离小于换能器直径的两倍，测得的速度认为是相速度。 - The envelope equation of laser propagating in the plasma channel , and the general expression related the laser spot size with the propagation distance and the width of the plasma channel etc . , are derived based on the hamilton - jacobi equation and the refractive index equation
在此基础上得到了激光在等离子体隧道中传输的包络方程以及光斑半径与传输距离、隧道宽度等初始参量的关系。 - The results also indicate that , in a piece of gain medium , the cutoff frequency , " the most quickly growing frequency " and the integral exponential gain are variables of the beam intensity , medium gain coefficient and propagation distance
在考虑了介质的增益后，截止空间频率、最快增长频率以及最大增长因子不再像原始b - t理论中那样保持不变，它成了和光强、介质增益系数及传播距离有关的一个量。 - Numerical examples show that , pulse deformation and broadening , spectrum redshifting , narrowing and distortion take place with increasing diffraction angle in the near field , and the pulse form changes with propagation distance in the near field , but is preserved in the far field
数值计算例说明在近场随衍射角的增大会出现脉冲变形、加宽、谱红移、变形、变窄等特性，脉冲形状在近场随传输距离变化而变化，但在远场保持不变。