magnetic variation

1. Compass heading or compass course, before correction for magnetic deviation or magnetic variation.
   罗盘航向或罗盘航线。未修正磁偏转或磁变。
2. Based on the law of electromagnetic induction, a method to measure the magnetic susceptibility variation of liquid metals was proposed and the instrument was developed.
   提出一种基于电磁感应原理的测量液态金属材料磁化率变化的方法并开发相应装置，分析该装置的基本工作原理。
3. Magnetic heading, the compass heading corrected for magnetic deviation but not magnetic variation; thus, the heading relative to magnetic north.
   磁航向，修正了磁偏转但未修正磁变，也就是相对于地球的北磁极的航向。
4. Method and device for measuring magnetic susceptibility variation of metal materials in liquid state and during solidification
   金属材料在液态和液固转变过程中磁化率变化的测量方法和装置
5. The Wilson depression is investigated by using the magnetic field data of an approximately circular-shaped single sunspot near the solar center ( fig. ⅰ) and the theoretical model of magnetic field variation with depths in the sunspot.
   利用靠近日面中心的一个近似园形单极黑子的磁场资科（图1）和磁场随黑子深度变化的程论模型来研究威尔逊降落。
6. The problems to be solved in transplanting the automatic modification program of magnetic variation and the methods for solving them are discussed.
   作者指出了要实现磁偏角自动修正程序移植要解决的问题以及解决这一问题的途径。
7. It is worthwhile to note that in some cases the variation of coarse quartz volume fraction exhibits a disagreement with both magnetic susceptibility variation and the marine oxygen isotope curves.
   值得注意的是由石英粗颗粒体积分数反映的东亚冬季风变化，在某些时段不仅同磁化率记录的夏季风变化不协调，而且同深海氧同位素记录存有明显差异。
8. This paper studies the relationship between magnetic conductance variation and fatigue life for ferromagnetic materials. A neural network model to predict the fatigue life is established, which can be used to evaluate fatigue and damage degree as well as the fatigue life for ferromagnetic materials.
   研究了铁磁材料在疲劳过程中磁导率的变化与疲劳寿命间的对应关系，建立了预测疲劳寿命的人工神经网络模型，它可用于估算材料的疲劳损伤程度，预测材料的疲劳寿命。
9. Based on the analysis of magnetic daily variation in two magnetic base stations, this paper puts forward a measure method of the equation of time between stations with correlation coefficient and reduces a calculating formula for correlation coefficient.
   通过对两站地磁日变数据的分析，提出了利用相关系数法解算地磁日变观测站间测量时差的方法，导出了地磁日变观测站间观测数据的相关系数计算公式。
10. The processing of marine magnetic diurnal variation data
    海磁日变资料的处理
11. Discussion and experiment about the direction of magnetic variation instrument D
    D磁变仪的定向讨论与实验
12. Paid Attention in Design to Some Technical Problems of Automotive Magnetic Current Variation Shock Absorber
    汽车磁流变减振器设计中值得注意的若干技术问题
13. The perturbation effect of the earth's magnetic field on the variation of the semimajor axis and eccentricity of the orbit of a charged equatorial satellite is studied by using the method of the perturbation.
    本文利用摄动理论研究了带电的赤道卫星在地球磁场中做椭圆轨道运动时地磁摄动力对轨道半长径和偏心率的摄动影响。
14. Two-dimensional model by magnetotelluric data has been obtained and compared with the results by magnetic variation analysis.
    这一结果与由大地电磁资料计算得到的二维模型剖面是一致的。
15. The grinding and polishing technology for large-aperture high-accuracy aspheric surface is introduced, such as stress polishing, magnetic variation polishing, ion beam polishing and six-axis linkage polishing, which is directly related to the development of relative research area such as control level and mechanical design ability.
    介绍了高精度光学非球面的研磨、抛光技术与计算机控制水平、机械设计能力等相关领域的发展。
16. The thermodynamic quantities such as the long-range and short-range order parameter, the internal energy, the entropy, the specific heat as well as the magnetic susceptibility were calculated in variation with temperature.
    文中算出了相关的热力学量如内能、潜热、熵、比热、长程和短程序参量，以及磁化率等。
17. The possibility of accomplishing the automatic modification of magnetic variation in a simple way is analysed for the medium-range and short-range aircraft in our country.
    最后，针对国内中短程飞机的飞行特点，探讨了用简便方法实现磁偏角自动修正的可能性。
18. Perturbation effect of the earth ′ s magnetic field on the variation of the semimajor axis and eccentricity of the orbit of a charged equatorial sattellite
    地球磁场对带电赤道卫星的轨道半长轴和偏心率的摄动影响
19. The fatigue status of the wire ropes bended was simulated. Surface magnetic field distribution of the wire ropes was tested by metal magnetic memory technology, and the variation of magnetic field intensity was analyzed and compared.
    模拟钢丝绳的弯曲疲劳状态，运用金属磁记忆技术对钢丝绳表面的磁场分布进行检测，并对其磁场强度的变化进行了分析和比较。
20. The Effect Analysis of the Observed Diurnal Magnetic Variation from Multi-stations on the Accuracy of Marine Magnetic Survey
    多台站地磁日变观测数据对远海磁测精度的影响分析
21. The motion of magnetic domain walls and the variation of MAE intensity in grain-oriented 3% Si-steels acted on by applied tension and a magnetic field have been observed.
    本文观察了晶粒取向3%Si-Fe在外加拉应力和磁场作用下，磁畴壁的运动及声发射强度（MAE）变化的一些现象。
22. Monito ring of JHE magnetospheric ring current by using magnetic variation field at middle and low latitudes
    用中低纬度变化磁场监测磁层环电流强度
23. Magnetic field induced variation of open circuit state of iron in chloride solutions
    磁场作用下铁在盐酸和氯化钠溶液中自腐蚀状态的变化
24. , By using x~ 2 test method, it is found that shallow shockes are under the influence of the motion of rising intersection of Lunar with 18. 6 years's cycle and sunspot magnetic variation period per 22 years.
    经χ~2检验可知。东北浅震受18.6年周的月球升交点运动和22年周的太阳黑子磁场交变影响较显著。
25. Magnetic data processing includes daily variation rectification, azimuth correction and normal field correction.
    磁力资料内业整理由日变校正、方位改正和正常场改正组成。
26. The development of visualized editing software for magnetic diurnal variation
    磁日变可视化编辑软件的开发
27. The one-soliton solution indicates obviously the spin precession around the magnetic field and periodic shape variation induced by the time-varying field as well.
    从单孤子解的表达式可以明显看出自旋绕着外磁场进动，且孤子的形状随外磁场的作用周期性变化。
28. The magnetic field distribution and parametric variation of DSPM motor is analyzed after load through simulated real currents.
    模拟了实际电流的换相过程，给出了电机带载后的磁场分布和参数变化规律。
29. During the magnetic storms, ENA flux variation shows some important features that may be common for storms.
    两次磁暴期间，ENA通量的变化表现出一些重要的共同特征。

noun

1. the angle (at a particular location) between magnetic north and true north

   Synonym:    magnetic declinationvariation