变化系数

Based on geordie coefficient, we measure the diversification of the urban system spatial polarization degree of Northeast China in different period by referring the model of polarized index which is used widely abroad or designing a new on the base of this.

以基尼系数为基础，引用国际上应用较多的或在此基础上设计新的&极化指数模型&，用以测定不同时段东北地区城镇系统的空间极化程度的变化。

The value of the loss, the equivalent of heat conductivity for stator coil and the thermal convection coefficient of convection faces are researched in this paper.

同时，在异步温度场的计算和分析中，绝缘层常常被忽略，但由于绝缘材料的导热系数很小，在一个很薄的股线绝缘层上将会有一个显著的温度变化。

The distribution uniformity of external magnetic field is weakened by the cylindrical coil with some thickness ferric-core. The model of fluid flow and heat transfer of spot GTAW pool in longitude magnetic field controlling is developed for the first time, which incorporates the free surface, surface tension gradient, additional fluid drive forces owing to the external longitude magnetic, heat transfer between weld pool and medium, latent heat of solid/liquid phase and heat physical properties of materials.

综合考虑了焊接熔池表面张力温度系数的变化、熔池自由表面变形、外加纵向磁场对熔池流体的附加作用力、熔池与周围介质的换热、固/液两相区的熔化潜热、焊接材料的热物理性能等问题，将熔池自由表面变形、外加纵向磁场与熔池流场的计算过程相耦合同时进行分析，模拟了不同焊接材料、不同外加磁场以及不同焊接条件下外加纵向磁场GTAW定点焊接熔池流体流动与传热过程。

The distribution form of isoline of displacement, velocity and acceleration in the section of the slope is remarkably affected by the slope angle.

坡度的变化对位移、速度、加速度放大系数等值线图的分布形式有明显影响。

In high perveance klystrons, violent variation of electron beam radius and electron transverse velocity is met with, and the energy exchange between kinetic electrons and gap field is a nonlinear process.

在高导流系数的速调管中电子束径及横向速度都会发生显著变化，运动电子与间隙电场之间的能量交换是非线性的互作用过程。

In wide band klystrons with high perveance electron beam, the charged particles show obvious transverse movement, and the energy exchange between kinetic electrons and gap field is a nonlinear interaction process.

在高导流系数的宽带速调管中，电子束径向及横向速度都会发生显著变化，运动电子与间隙电场之间的能量交换是非线性的互作用过程。

As to multi-layer reservoirs,each layer can be divided into three areas:area of gravel-packing,area of perforation and area of radial flow.Each area has its own governing equaiton and the solution is expressed by Green function.The well bore pressure and layer-rate is given through Green function in Laplace space.The pressure drop and skin factor isobtained also in each area.

根据多层砾石充填完井的渗流特点，将每个产层在径向上分成3个区域，即砾石充填区、射孔区、地层径向流区，每个区域有各自的渗流方程，对n层油藏有3n个渗流方程，将每个区域的方程用Green函数来表示，由各层的Green函数得到井筒混合压力、分层压力及分层产量在Laplace空间上的解，最后得到每层各区域的压力损失、表皮系数以及井底压力和分层产量与时间的变化关系。

The influence of temperature and heat flux direction on the heat conduction characteristics of four common woods, fir, red pine, white pine and larch, were investigated.

以4种常用木材为实验对象，研究了不同温度和热流方向对木材的导热系数、比热和热扩散率的影响，并分析了热物理性质变化的原因。

Based on the magnetic field calculation some parameters of the sample motor such aselectromotive force with no load, leakage coefficient with no load and magnetictorque are calculated and influence on the parameters that is caused by the change ofthe structure of the sample motor is also discussed.

在电磁场计算的基础上，进行了电机空载反电势，空载漏磁系数，电磁转矩等相关参数的计算，讨论了横向磁通永磁同步电动机的结构变化对参数的影响。

The influences of Halbach magnet axial length on the leakage flux density are analyzed. The relationship between the key design parameters of motor, such as leakage coefficient and the calculated length of the armature, and the structure parameters of motor are obtained.

通过大量的计算，探讨了Halbach阵列永磁电机在转子无铁心情况下影响气隙磁密的各种因素，分析了不同Halbach磁体轴向长度对端部漏磁的影响规律，给出了无铁心永磁电机漏磁系数、电枢计算长度等主要设计参数随电机结构尺寸的变化规律。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。