查询词典 modified bessel function

As the beam further propagation, self-reconstruction of the Bessel beam generated. The divergence of the self-reconstruction beam causes the beam intensity decreasing and the bright spot size increasing as the beam propagating.

当光束继续传播，贝塞尔光发生自重建(Self-reconstruction)，但重建的Bessel光将会发散，光强随着传播距离增大而迅速下降，且中心亮斑尺寸也迅速增大。

When a plane wave illuminates the bottom of axicon with ring obstacle, a bottle beam is generated within the maximum non-diffractional distance, and the beam keeps non-diffractional Bessel beam in front and at the back of the Bottle beam.

平面波入射到带有环形障碍物的轴棱锥底面时，将在轴棱锥产生的最大无衍射距离内形成Bottle beam，而在Bottle beam的前后仍然保持无衍射贝塞尔光。

With low pass filter use Bessel for least amount of overshoot in the time domain, and Cauer for fastest roll off in the freq domain.

在时域，最小超调量的低通滤波器用Bessel滤波器，在频率域是滚降最快速的低通滤波器用Cauer 或elliptic滤波器。

With low pass filter use Bessel for least amount of overshoot in the time domain, and Cauer for fastest rolloff in the freq domain.

设计低通滤波器时选用贝塞尔型可以使时域较平坦，没有太多过冲，选用切比雪夫可以提高截止频率的陡峭性。

It contains a complete example of Bessel curve, is a very valuable source.

其内容为一个完整的贝塞尔曲线的实例，是很有价值的源代码。

Matlab Application of different boundary conditions of Bessel equation calculation of the source.

详细说明：应用matlab对不同边界条件下的贝塞尔方程进行计算的源程序。

The main method of evaluation is Bessel formula.

重复性评定方法，主要是贝塞尔公式。

Bessel low a place in people "abuse" is also a lower probability of infection is an effective way.

贝塞尔说，少在人多的地方&扎堆儿&也是降低感染概率的一个有效方法。

This is a procedure under Bessel curve and surface generation algorithm for small procedures, the tc2.0 completion.

本程序是一个根据贝赛尔曲线和曲面生成算法的小程序，在tc2.0下完成的。

Furthermore, in recent several years, people have generated considerable interests in the high order Bessel beams.

此外，近年来人们对高阶贝塞尔光束产生了极大的兴趣。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了