magnetic variation

Discussion and experiment about the direction of magnetic variation instrument D

D磁变仪的定向讨论与实验

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。

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

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。

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

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。

, 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。

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。

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

The processing of marine magnetic diurnal variation data

海磁日变资料的处理

The development of visualized editing software for magnetic diurnal variation

磁日变可视化编辑软件的开发

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

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。

Based on the ion source discharging experiment in NT50 neutron generator , effect of magnetic field variation in Penning ion source on discharge current is studied .

溅射离子泵在高电压和高磁场的作用下产生潘宁放电，吸附容器内气体分子达到真空的目的。

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。

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。

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。

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

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。

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

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。

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。

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。