磁极产生稳定磁场。
当你降低温度时，或者在某些情况下对材料施加压力或施加磁场，这个系统会试图变成一种更稳定的其他状态。
When you lower the temperature, or in some cases stress the material or impose a magnetic field, the system tries to reach a different state that is more stable.
研究者测量了一些在南非卡普瓦尔（Kaapvaal）克拉通（craton，稳定地块）被发现的岩石的磁场强度，卡普瓦尔克拉通是公认为可以追溯到30多亿年前的一块地质区域。
The researchers measured the magnetic strength of certain rocks found in the Kaapvaal craton of South Africa, a geologic region known to date back more than 3 billion years.
换言之，连接电脑的一台相机和雷射光，即可稳定地操控机器人的磁场位置和移动。
The position of the robot is monitored by lasers and a camera, which are connected to a computer that controls the field to keep the robot steady.
“金熙真把太阳风活动剧烈和相对稳定时得到的数据分开，”他又说道，“当行星际磁场波动不大时，她得到的结果和我们熟悉的一样。
"Heejeong separated the data into when the solar wind was fluctuating a lot and when it was fluctuating a little," he added.
为了使能量在耀斑爆发前储存起来，不致过早释放，磁场结构必须是亚稳定的。
In order for the preflare energy to be stored without premature release, the magnetic field configuration must be metastable .
本文研究了在垂直于磁场和等离子体流动的重力场中具有剪切流动的电流片的稳定性。
The stability is studied of a current sheet with a sheared flow in a gravitational field which is perpendicular to the magnetic field and plasma flow.
当磁场偏离势场或无力场时，将会产生场向电流，该电流与导管的强度和稳定维持密切相关。
When the magnetic field deviates from potential or force-free field, the field-aligned current can be produced, and it relates closely with the intensity and lifetime of ducts.
同时利用CMOS多谐振荡电路产生窄脉冲电流序列对前面处理过的非晶带进行激励，制作成灵敏度高、稳定性好、功耗低的弱磁场传感器。
A sensitive, stable and low power consumption magnetic sensor is constructed using a CMOS multivibrator circuit, in which a sharp pulse train current is applied to the treated amorphous ribbon.
利用麦克斯韦方程组和场的轴对称性，分别对含不稳定电荷源和不稳定电流源的轴对称非静态空间电磁场进行了研究。
By using the Maxwells equations and axial symmetry, the axial symmetric unstable electromagnetic field with unstable charge source and unstable current source is studied.
压缩空气在磁场作用下产生的等离子体可以点燃煤粉并保持稳定燃烧。
The plasma generated by compressed air in magnetic field can ignite pulverized coal and keep stable burning.
这两次穿越是在弱而稳定的南向行星际磁场(IMF)条件下发生的。
The encounters occur under conditions of weak and steady southward Interplanetary Magnetic Field (IMF).
指出，只有当附加磁场与等离子体接近不稳定边界的模相耦合时，才可能引起平衡位形很大的变化。
It is pointed out that a large variation in the equilibrium configuration may take place only when the small magnetic perturbations couple with the plasma modes which are almost neutally stable.
试验证明系统电路稳定可靠，对环境磁场的变化反应灵敏。
The experimental result shows that the whole electric circuit is reliable and responds fast to the variety of the environment magnetic field.
这种具有特殊性的定解问题的解是否唯一和稳定对于求解瞬态涡流电磁场而言是一个基本问题。
In is a fundamental theoretical problem whether the solution to the irregular problem for determining solution in unique and stable.
定性地分析了在异步电动机间接磁场定向控制中，电机时间常数失配度对异步电动机稳定性的影响。
The influence of the motor time constant mismatch on the stability of induction motors under indirect field-oriented control is analyzed.
本文讨论了强流电子束通过周期性静电场和静磁场的稳定性。
The stability of intense electron beam via the periodic static electric and magnetic fields is discussed.
并在此基础上，得出了载流薄板在电磁场与机械荷载共同作用下的磁弹性动力稳定性方程。
On this basis, draw magnetoelastic movement stability equation of thin current-carrying plates under the effect of electric magnetic field and machinery load.
我们探讨了弱聚焦磁场中带电粒子轴向和径向运动的稳定性问题，得到稳定性条件。
We discussed the stability of both radial movement and axis movement of charged particle in infirm focusing magnetic field and obtained the term of stability.
例如：弹性膜的平衡问题，稳定状态的热传导问题，不可压缩势流问题，静电场问题以及静磁场问题。
Such as: the balance of elastic membrane, the heat conduction of stationary state, the incompressible potential flow, the problem of electrostatic field and magnetostatics field.
详细论述了电磁场和永久磁场两种模式下，端部霍尔离子源的工作稳定性、离子能量大小以及离子束分布特性的比较。
Two patterns of end-Hall ion source using electromagnet coil or permanent magnet are comparatively analysed for ion energy and distribution.
RRI的产品线包括高性能梯度和填充线圈，高稳定性电源，梯度放大器，磁场管理和电磁学咨询。
RRI's product line includes high performance gradient and shim coils, high stability shim power supplies, gradient amplifiers, magnetic field management and consulting on magnetics.
讨论了具有抛物线形电流分布的电弧等离子体柱在磁场中的不稳定性问题。
The helical instability problem of an arc plasma column with a parabolic current profile in a magnetic field is discussed.
利用麦克斯韦方程组和场的轴对称性，分别对含不稳定电荷源和不稳定电流源的轴对称非静态空间电磁场进行了研究。
By using the Maxwell's equations and axial symmetry, the axial symmetric unstable electromagnetic field with unstable charge source and unstable current source is studied.
对TEM模，分析了内导体形状、位置对谐振腔内电磁场分布的影响；以及它们对启动和稳定工作的影响。
For TEM model in coaxial resonant cavity, the influence of shape and position of inner conductor on electromagnetic field, start-up and steady work was studied.
放电为磁场激励型，稳定的等离子体由电磁场所维持，空间电荷产生的静电场引起荷电粒子的双极扩散。
A steady state plasma is maintained by electromagnetic field and ambipolar diffusion of charged particles is caused by electrostatic field of space charge.
而较高气压时，束电子除受自身电磁场作用及库仑碰撞散射外，等离子体不稳定性使束流传输效率明显降低。
At relatively high pressure, in addition to electromagnetic field and electron's Coulomb scattering by gas molecules, plasma instability would result in decrease of propagation efficiency.
而较高气压时，束电子除受自身电磁场作用及库仑碰撞散射外，等离子体不稳定性使束流传输效率明显降低。
At relatively high pressure, in addition to electromagnetic field and electron's Coulomb scattering by gas molecules, plasma instability would result in decrease of propagation efficiency.
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