According to structure features, parallel plane field and axisymmetrical field were used in approximate calculations of core and yoke of the valve respectively.
根据电磁阀的结构特点，将磁芯和磁轭分别按平行平面场和轴对称场近似处理。
The electrostatic field region on the cross section of two charged parallel strip transmission lines in a plane is transformed into the interior of a rectangle with the conformal mapping.
将两共面平行荷电微带传输线在横截面内的场区用保形映射变换为矩形内域，从而获得单位纵长传输线的电容和静电能量。
The specimen with different direction, with the field or a magnifying glass to see a group of parallel dark and straight line or a line or plane appears on the cleavage plane until it is twin.
将标本向不同方向旋转，直到用野外或放大镜看到晶面或解理面上出现一组平行的明暗相间的直线或折线，这就是双晶纹。
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