查询词典 prolate cycloid

The results show that the pollen forms of Ferula and Heracleum are prolate and perprolate, respectively, and there are 3 colporates with reticulate sculpture on the pollen exines of the both genuses.

结果表明，阿魏属花粉形状为长球形，而独活属花粉为超长球形；2属花粉外壁均具有网状纹饰，3孔沟。

A prolate spheroid is generated by revolving an ellipse about its major axis.

扁长球体是将一个椭圆体依其主轴旋转而成的。

There are two kinds of mandril of warm air blower,one is prolate pipe,the other is cooling boardcooling board is easy to mold by the mould and has a lot of advantages of good thermal diffusivity,compact and simple craft,low aerating restance,safe and reliable operation and convenient maintenance.

我厂生产的暖风机散热芯子为扁管和散热片式结构，其中散热片由模具一次冲制成型，具有散热性能好、结构紧凑新颖、工艺先进简单、通气阻力小、散热效率高、运行安全可靠、维护保养方便等优点。

The prolate body and the energy dissipation lead to the i nstability of the spinning. Two common control scheme was used to design the active nutation controller.

由于细长体和能量耗散的存在，导致了自旋运动的发散—章动运动，为此采用两种工程上常用的喷气主动控制方法设计了主动章动控制器。

So we have the fractions fi and the specific form of the quantum kinetic operator onthe oblate ellipsoid surface and the prolate ellipsoid surface, and we also discuss the interrelated problem.

于是，我们在二维椭球约束体系中扁椭球和长椭球情况下得到了函数f_i，给出了动能算符的明确形式，并讨论了相关问题。

Also, the electric force acting on an oblate is greater than that on a prolate.

至於其他的特殊现象，我们将会在本文中一一的详细解说。

The prolate, oblate and some particle hole excited configurations are obtained.

得到了长椭球、扁椭球和一些激发态的解。

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。

As a test problem, the steady flow fields and hydrodynamic forces of a 6:1 prolate ellipsoid at different incidence angle are computed. Computed results including surface pressure coefficient, surface friction coefficient, and body hydrodynamic coefficients, are compared with experimental and numerical ones of published papers, the agreement is satisfactory.

作为算例之一，给出了6：1椭球体在不同攻角下定常流场和水动力的数值计算结果，包括物体表面的压强系数、切应力系数的分布及物体所受升力系数、阻力系数和力矩系数随攻角的变化规律，并与国外文献的计算和实验结果进行了比较，符合程度令人满意。

The flow fields around a prolate spheroid were investigated by numerical simulation and experiments when the flow is both in laminar state and in turbulent state.

本文利用数值模拟和实验方法研究了层流和湍流状态下绕椭球的流场，主要目的是探索复杂流动情况下的湍流计算方法。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。