查询词典 bessel function

In this thesis, the research on"the Nodal Green's Function Method For Cylindrical Geometry on Neumann Boundary Condition Based on Bessel Functions" is a pioneer work.

以上工作的完成，使该程序系统成为清华大学核研院堆芯物理设计和燃料管理的核心程序。

In order to study the propagation of partially coherent modified Bessel-Gaussian beams passing through a paraxial ABCD optical system with hard-edge aperture,the approximate analytical propagation equation was derived with the hard-edged aperture function expanded into a finite sum of complex Gaussian functions.

为了对部分相干修正贝塞尔－高斯光束通过有硬边光阑近轴4BCD光学系统的传输进行研究，采用将硬边光阑窗口函数展开为有限个复高斯函数之和的方法，得到了近似的解析传输公式。

It is convenient because Bessel functions in the formula are common special function.

而且公式中的贝塞耳函数为常用特殊函数，计算起来很方便。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。