从载流直导线的磁感应强度公式出发，应用极限理论，计算了圆形载流导线轴线上一点的磁感应强度。
By analyzing the formula of magnetic inductional intension and using the margin theory, this paper worked out the magnetic inductional intension of a point on round electric current lead axes.
以磁各向异性的毕奥-萨伐尔定律，以及由此定律而求出的在各向异性磁介质中载流直导线磁场，作为论述该研究的基础。
The present work is based on Biot-Savart law of magnetic anisotropy and also on magnetic field of current-carrying straight conductor in anisotropically magnetic medium solved from this law.
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