使用直流电是产生静电磁场的另一个原因，例如铁路系统使用直流电，电视和计算机屏幕带有阴极放射管。
The use of DC electricity is another source of static electric fields, e.g. rail systems using DC, and televisions and computer screens with cathode ray tubes.
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.
这些电子被引入一个球形金属收集器以产生电流，继而产生线圈的磁场——这样这个系统就可以自我维持了。
These electrons get funnelled into a metal spherical receiver to produce a current, which generates the wire's magnetic field - making the system self-sustaining.
或者伊卡洛斯飞船可以在到达目标恒星系统时，使用一张超大的磁力网，借助当地的太阳风或磁场来辅助减速。
Alternatively Icarus could use an extremely large magnetic sail to help decelerate, once within reach of the target star's solar wind or magnetosphere.
富士通公司称，该系统是世界上首个无线充电系统。这项技术利用充电系统和电子产品之间的磁场传输电能。
Claiming to be the world's first of its kind, the technology works on the basis of the transmission of electricity using magnetic fields between the charger and the electronic device.
但是，由于在陆地上不需要这样的电子磁场探测系统，爬行类动物，鸟类和哺乳动物都渐渐失去了这一功能。
However, over the years reptiles, birds and mammals lost their electrosense as it wasn’t needed for life on terra firma.
为了将原子冷却至接近绝对零度，物理学家倚靠的是雷射及磁场组成的系统来局限原子。
To cool atoms to near absolute zero, physicists rely on systems of lasers and magnetic fields to trap atoms.
本文针对转子磁场定向的矢量控制技术进行了一些研究和探索，并用DSP实现控制系统的全数字化设计。
This paper does some research works of the vector control technology based on rotator field oriented and then designs the whole system with DSP.
实现了一种基于转矩绕组气隙磁场定向控制的无轴承异步电机控制系统。
A control system of bearingless induction motor based on torque winding air gap field oriented vector control is accomplished.
它是现代科学的基础上称为磁处理，它在生物系统探讨了磁场的影响。
It is the basis for a modern science called magnetobiology, which explores the effects of magnetic fields on living systems.
磁场计算与磁体设计系统，是一种用于计算永磁体空间磁场分布的专业软件。
The calculation design system for magnet & magnetic field is a kind of special calculation and analysis software.
低频电磁场电流测控系统包括电流测试和输出控制两个部分，由软件和硬件相互配合组成一个完整的计算机控制系统。
The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.
由于电磁场的量子化效应，电磁系统发射有限能量的电磁场，其频谱必有一高频率上限。
Due to the quantization of electromagnetic fields there is an upper frequency limit in the spectrum of any finite energy transmitted by an electromagnetic system.
在磁共振成像系统中，梯度磁场用来对成像物体进行空间编码。
Imaging objects are spatially encoded by gradient magnetic fields in magnetic resonance imaging systems.
定子磁场定向的直接转矩控制逐渐被广泛应用于高性能异步电机调速系统。
The stator flux-oriented direct torque control is widely used in high performance motion control of induction motors.
以这种铜线加电池形成的电磁场是磁悬浮列车铁路系统的初步设想。
The magnetic field created in this wire-and-battery experiment is the simple idea behind a maglev train rail system.
根据项目的具体要求全面分析了并论证了视觉定位磁场分布检测系统的具体指标及可行性。
The particular specifications and feasibility of magnetic field detecting system are analyzed and demonstrated comprehensively according to the practical requirements.
实验结果表明该测量系统满足瞬态弱磁场测量的要求。
Tests sh ow that this system can meet the requirement of measurement of transient weak magnetic field.
论文中选用TMS320F 240数字信号处理芯片作为系统的主控芯片，实现了全数字化的直接磁场定向的矢量控制系统。
TMS320F240 digital signal processor that is selected as the main CPU in the system realizes the full digital vector control system.
超导磁体系统产生的磁场力可抑制晶体生长过程中的自然对流，从而提高晶体结晶质量。
The magnetic Kelvin force generated by a superconducting magnet system can damp the natural convection during crystal growth and thus the crystal quality can be improved.
其三维磁场分析是电磁系统优化设计的基础。
Analysis of three-dimensional magnetic field is the foundation work for optimum design of electromagnetic system.
在磁场定向控制的异步电机驱动系统中，精确的磁链估计是提高系统性能的关键。
In an induction motor drive system with field oriented control, the key to improve its performances is accurate flux estimate.
针对雷达电磁聚焦系统磁场分布的特殊检测要求，开发了一套基于视觉定位的磁场分布自动检测系统。
According to the special measurement requirements of the magnetic field distribution of radar electromagnetic focusing system, a automatic measurement system based on vision localization is developed.
本文主要从多传感器数据融合和虚拟仪器两方面介绍了一种电磁场强测量系统的设计方法。
This paper introduces the design method for intensive electromagnetic field measuring system with respect to multi sensor data fusion and virtual instruments.
为了测量超高速碰撞过程中产生瞬态弱磁场的磁感应强度，设计了弱磁场测量的线圈系统。
A coil measurement system has been designed to measure the magnetic induction intensity of the weak magnetic field generated by hypervelocity impact.
设计的灰色反馈线性化控制系统可以实现间接磁场定向感应伺服电机来跟踪速度给定。
The designed grey feedback linearization control system was implemented in an indirect field-oriented induction servo motor to track speed commands.
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.
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.
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