Changes in the thickness, viscosity and conductivity of the outer core in the past could have led to convection patterns that caused the magnetic pole to tilt.
过去任何来自于核外层的厚度、粘性和导电性变化都会导致对流形式变化从而引起磁极倾斜。
Objective to design a system of conductivity tomography using focused magnetic fields for data acquisition.
目的设计磁聚焦电导率成像系统硬件，实现数据采集。
This paper studies the thermal conductivity, the electrical resistivity and the magnetic resistance of high purity copper, some experimental data are presented.
本文研究了高纯铜线的热导率、电阻率以及磁阻等特性，给出了必要的实验数据。
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