One is by measuring the magnetic reluctance of the gap between the wire and the pole shoe in the radial or longitudinal magnetic circuit along the wire, and the other is by measuring the main magnetic flux of the total magnetic flux through the wire in the longitudinal magnetic circuit.
介绍录井钢丝直径的恒磁测量原理，包括沿钢丝径向和轴向的磁阻测量方法、沿钢丝轴向的主磁通测量方法，它们均可应用于表面受油泥或其他非导磁材料覆盖钢丝的在线连续测
According to the structure of a electromagnetic gear couple,this research paper analyzed the main magnetic circuit as well as derived the calculation formulas for its uneven working and assembling airgap magnetic conduction.
根据电磁齿轮的结构特点,分析了电磁齿轮传动的主磁路,并推导出非均匀的工作气隙磁场与装配气隙磁场磁导的计算公式。
Modeling the main geomagnetic field is a kind of all-around research work,concerning with the research on the main geomagnetic filed theory,magnetic survey,data reduction,model expression,and model interpretation and application.
主磁场建模是一项综合性的研究工作,它涉及主磁场理论、磁场测量、数据同化、模型表达、模型解释以及模型运用等多方面的研究。
The energy density spectrum and secular variation of the Earth s main magnetic field on the surface of the earth during 1690～2000 were calculated and analyzed according to the models of Jeremy Bloxham and Andrew Jackson and the eighth generation of International Geomagnetic Reference Field(IGRF).
根据BJ地磁场模型和第 8代国际地磁参考场 (IGRF)模型 ,计算并分析了 16 90～ 2 0 0 0年期间地球表面主磁场和分量的能量密度谱及其长期变化 。