一条在地球表面上连接磁偏为零的点的假想线。
On the Earth's surface where the magnetic declination is zero.
分析了高压蒸汽管线带磁及焊接时产生磁偏吹的原因，介绍了简易消磁焊接新方法。
The reason of magnetic deflective blow when high pressure vapor pipe is magnetized and welded is analyzed. A new simple demagnetizing weld is introduced.
提出了一种新结构的偏磁式消弧线圈及其控制方法。
A new structure of arc - suppression coil with magnetic bias and its control method is presented.
在对消弧线圈的各种自动调谐原理系统分析的基础上，确定了适用于偏磁式消弧线圈的调谐方法。
Based on the detailed analysis of the various automatic tuning principle of the arc-suppression coil, a tuning method of the magnetic bias ASC is acquired.
首先，本文介绍了产生变压器直流偏磁的原因。
Firstly, the reasons of DC magnetic bias on transformer are studied.
爆能枪虽然能造成灼热的震荡波，但无法穿透磁密封装置或偏导护盾。
While blasters do deliver a searing concussive blast, they can be foiled by magnetic seals and deflector shields.
这两种方式均可以解决传统推挽直流变换器存在的偏磁问题。
These methods all can be used to solve the magnetic aberration hi the conventional push-pull converter.
最终通过以上结果的分析初步探讨了本文所计算的变压器允许直流偏磁的准则，为工程实践和进一步的理论研究提供了参考。
According to the analysis results, the permission criteria of transformer DC magnetic bias is discussed and supplies reference for engineering practice and theoretical research.
根据偏磁式消弧线圈的调谐原理和控制方法，深入研究了偏磁式消弧线圈的全数字化控制器。
According to tuning theory and control method of the magnetic bias ASC, the fully digital controller of the magnetic bias ASC is implemented.
依据偏磁式消弧线圈的工作原理，确定了偏磁式消弧线圈的控制方法。
According to operating principle of the magnetic bias ASC, the control method of magnetic bias ASC is decided.
DSP主要完成采样、PI调节和通信等，实现偏磁式消弧线圈励磁电流的数字控制。
The DSP realizes functions of sampling, PI regulation, communication and so on to digitally control the excitation current of arc-suppression coil with magnetic bias.
本文将直流偏磁现象与电磁场计算有机地结合在一起，对变压器在不同直流偏磁下的运行性能做了仿真和分析。
The phenomenon of DC magnetic bias analysis and electromagnetic field calculating are combined in this paper and the running performance is simulated with different magnetic bias DC.
分析了变换器产生偏磁的机理，并给出了抑制偏磁的方法。
The mechanism of magnetic bias is analyzed and the suppression method is explained.
最后，采用温度场分析方法对变压器在不同直流偏磁量下的温升进行求解，并分析了直流偏磁对变压器温升的影响。
At last, the temperature-rise of transformer is calculated using the temperature field method and the influence on DC magnetic bias to temperature-rise is analyzed.
磁粉心具有较高的饱和磁通密度和较好的直流偏磁动态线性。
Powder core has high saturation flux density and excellent motion linearity of DC bias.
试验结果表明，该方法能在不增加变压器损耗、温升的条件下有效抑制变压器直流偏磁，试验数据证明了该方法的有效性和正确性。
The experimental results show that the scheme can not increase in transformer loss. The method in this design is proved to be effective and efficient one by the results of experiment.
依据偏磁式消弧线圈的工作原理，确定了偏磁式消弧线圈的控制方法。
Based on it's working principle, we determine the arc-suppression coil with magnetic bias methods.
采用基于UC 3846电流型控制芯片，简化了电流保护电路，避免了推挽变换器工作时磁芯偏磁导致的事故发生。
UC3846 of current mode control is used so that circuit for current limited function is removed and flux imbalance that can cause accident is been avoided.
本文分析了导致逆变电源输出变压器直流偏磁的原因。
By analyzing the causes of the flux imbalance in the output transformer of the inverter.
介绍了偏磁式自动调谐消弧线圈装置在武汉市武展变电站运行的状况。
The basic principle of biasing magnet automatic resonance regulated Petersen Coil and its operating condition at Wuzhan substation were introduced.
实验研究了一次脉冲偏场作用下外延石榴石膜硬磁泡的形成规律。
The formation of hard bubbles by single-pulse bias field in epitaxial garnet films was investigated in some detail.
“低直流偏场法”是一种以枝状畴为出发点来形成硬磁畴的新方法。
The low bias field method is a new way to reproduce hard domains from multi branched domains.
研究得出，当磁芯中存在正偏磁时，检测绕组输出端电压的负峰值与直流偏磁磁势是线性关系；
Researches indicate that negative peak value of the output voltage of the testing winding is linear with the positive DC magnetic biasing potential;
当真北和磁北相吻合的时候，确实存在一些被称为无偏线的地理线。
Geographical lines do exist where true north and magnetic north are aligned, and these are called agonic lines.
针对磁致伸缩材料的非线性响应特点，设计了定偏闭环反馈系统，使探头始终工作在最佳偏置磁场下。
The negative feedback system with fixed bias is designed based on nonlinear response of the magnetostrictive materials so as to keep the sensor work at its most sensitive situation.
研究石榴石磁泡膜在直流偏磁场作用下布洛赫线间的静磁作用对硬磁畴稳定性的影响。
The influence of the magnetostatic interaction between vertical Bloch lines (VBLs) on the stability of hard domains in garnet bubble films subjected to a magnetostatic bias field is investigated.
采用双环控制，使输出电流能够高度精确跟踪电流编程基准，防止了偏磁。
A double loop control method has been used, so the output current can accurately follow the programmable reference, and the flux imbalance is avoided.
偏没打着茗烟，便落在他桌上，正打在面前，将一个磁砚水壶打了个粉碎，溅了一书黑水。 贾菌如何依得。
But when the stone landed smack in front of him, smashing his water-bottle and spattering his books with ink, this was more than he could stand.
实验发现系列脉冲偏场能形成磁泡点阵，并给出了其形成规律，为磁泡点阵的形成提供了一种方法。
Through the experiment finds that the bubble array can be caused by the series pulse deflective field, and gives out its formation rules. it is provided a method for the bubble array forming.
实验发现系列脉冲偏场能形成磁泡点阵，并给出了其形成规律，为磁泡点阵的形成提供了一种方法。
Through the experiment finds that the bubble array can be caused by the series pulse deflective field, and gives out its formation rules. it is provided a method for the bubble array forming.
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