查询词典 spheroidal

Their pollen grains are subspheroidal to spheroidal, and germination aperture is 3-colpate; pollen exine has punctuate to foveolate sculpture; it is easy to distinguish exine and intine except S.

各种植物花粉外壁超微结构的特征在旌节花属两个组中较一致，但其差异可作为探讨属下种的分类和系统学关系的依据。

Flat plate steady mathematical model and non steady symmetric model are presented, the analytical solution of temperature of powder is derived on the basis of non steady symmetric model in spheroidal coordinates with the methods of mathematical transformation and principle of superposition .

对点火问题进行研究，给出了两种点火的数学模型；平板定常模型和球对称非定常模型。从火药颗粒的球对称非定常模型出发，利用叠加原理和数学变换导出了火药颗粒表面温度的分析解。该研究对深入研究点火理论和起始弹道学有一定的作

An improvement is made to the multi-user Prolate Spheroidal Wave Functions IR UWB orthogonal pulse waveforms design.

对多用户椭球波函数脉冲UWB正交波形设计方法进行了改进。

In chapter 3, a novel optimal UWB shaping pulse design algorithm based on prolate spheroidal wave functions is described.

第3章主要介绍了一种基于扁长椭球波函数的超宽带成形脉冲优化设计算法。

It is indicated by the performance analysis that the approach here has comparative bias and variance as the approach of discrete prolate spheroidal sequence multitaper spectral analysis.

性能分析的结果表明，此方法与离散长球序列多窗口谱分析方法具有相当的估计偏差与方差性能。

Then, a method to generate adaptive UWB shaping pulse was proposed based on weight combination of prolate spheroidal wave functions matching UWB multiple sub-band spectral mask.

然后，利用PSWFs函数的特性，提出了一种基于多频带的PSWFs函数基的加权线性组合来设计UWB自适应脉冲波形的算法。

The pollen grains are small to medium in size and spheroidal or subprolate in shape, with a few being prolate.

一般中等大小，绝大多数为圆球形，少数为近长球形或长球形。

In Chapter 2, we study exact solutions of the separated parts of Klein-Gordon field equation on some stationary and axisymmetry black hole backgrounds. We demonstrate that the radial and angular parts of a massive scalar field equation in the Kerr-Newman and Kerr-Sen black hole space-times satisfies the generalized spheroidal wave equation which is, in fact, a confluent Heun equation.

在第二章中我们研究了稳态轴对称黑洞背景几何中Klein-Gordon场方程分离变量部分的精确解，表明了Kerr-Newman黑洞及Kerr-Sen黑洞中有质量复标量场方程的径向部分和角向部分均满足广义椭球波方程，而后者实际上就是合流的Heun方程。

In this paper, we will try to derive the formation of the spin-weighted spheroidal wave function in the case of s=2, using the method of super-symmetric quantum mechanics.

本篇文章我们将利用超对称量子力学方法试探性的推导出s=2时广义椭球函数的形式。

The average diameter and volume fraction of the spheroidal phase approximately equal to 18μm and 30% respectively.

室温压缩时，S1的屈服强度和断裂塑性应变分别达到1325 MPa和12.0 %，极限断裂强度达到了1800 MPa。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。