电磁场

In this paper the quantum mechanical algebra, the Moyal-Weyl multiplication and the Bopp transition are introduced, and the Hamiltonian operator of the charged particle in electromagnetic field is also discussed.

首先扼要介绍了非对易相空间中的量子力学代数、Moyal-Weyl乘法和广义Bopp变换，然后讨论了电磁场中带电粒子的Hamiltonian算符，最后给出了其在非对易相空间中的能级情况。

This paper explores the application of the modern digitized technology to the teaching of the Electromagnetism. By the numerical calculation and digital simulation, the electromagnetic field of an uniformly charged ring, the non-linear vibration of charged particle in an uniformly charged ring and the uniform area of Helmholtz coils are discussed.

本文探讨现代数字技术在电磁学教学中的应用，通过数值计算和数字模拟，深入讨论了环形源电磁场的空间分布、带电粒子在带电圆环电场中的非线性振动以及亥姆霍兹线圈内的均匀磁场问题。

To solve above problems, a new method has been created in this paper: to construct a Hermite polynomial approximation of the objective function by FE solution using the sensitivity idea.

因此，本文提出在进行若干次电磁场数值计算之后，利用目标函数值和目标函数对设计变量的灵敏度建立目标函数的计算方法。

The main procedures are as following: to generate small increment of parameters automatically and to calculate the FE several times and obtain the sensitivity of objective function to the parameters, and then form a Hermite polynomial approximation, the calculation of FE solutions are substitute by the calculation of polynomial approximation, so time cost decreases dramatically.

用n维埃尔米特插值技术建立设计变量在可行域上的目标函数的逼近函数；将局部寻优的梯度算法和全局寻优的随机算法结合起来，大幅度地降低寻优过程中电磁场的计算次数。

The CRS2280 Short Wave Hypertherm System applies treatment technic of no-hospitalization, no-operation, no-injection, no-fulgurate, no-cannula, no-sidelying, no-wound, no-pain, treated style.

这种医疗技术应用了13.56兆赫的高频振荡电流，一对外部电容平台经常应用于人体，从而产生电磁堆积，也就是电磁场。

EPL only monopole radio frequency produces controllable depth monopole radio frequency by the electromagnetic field vicinity in skin fibre may tighten up the dermis and the hypoderm room tier, the maximum temperature is located in skin underneath under making monopole irradiate several millimeters, the cuticle is not good in by the comfort scalding , curing safety.

EPL独有的单极射频通过电磁场在皮肤的周围产生深度可控的单极射频场，可收紧真皮和皮下组织间的纤维层，使单极照射下最高温度位于皮肤下面几毫米，表皮不会被烫伤，治疗安全舒适。

Set up a numerical model for calculating the induced current in humen body when exposed in electromagnetic fields.

基于并行三维阻抗方法，建立了用于仿真暴露在电磁场环境中的人体内感应电流密度的分布情况的通用的数值模型。

High melt surface stability could be obtained when molten metal level is located equally with upside of induction coil.

在电源频率一定的情况下，当金属液面与线圈上平面平齐时，液面波动平缓，在施加相同功率的交变电磁场条件下所得液面形状凸起越高，是电磁铸造所要求的液面状态。

The distribution of the electromagnetic field of an uniformly moving electric dipole is calculated by analyzing the electromagnetic potential of the electric dipole and making use of the covariability of electromagnetic field in different inertial frame under the theory of relativity.

本文通过对电偶极子电磁势的分析和相对论下电磁场在不同惯性系中的协变分布，计算了作匀速直线运动的电偶极子的电场和磁场的空间分布

A spectral-domain full-wave model for the coaxial probe is established and the Galerkin's moment method is used to solve the integral equation, with efforts on numerical treatments of the singular infinite integral.

微波电磁参数测量技术作为微波传感的重要分支，在国防、工业、农业、材料科学、生物医学、微波遥感、隐身技术等电磁场和微波工程技术的实践中发挥着重要作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。