Inversely proportional to the cross-sectional area of the rod.

棒子的横截面积，成反比。

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With these equations, they have investigated the problem of Faraday rotation in a longitudinally magnetized ferrite rod with tapering cross-sections at both ends.

利用这组方程，作者研究了纵向磁化铁氧体柱中的法拉第旋转（铁氧体柱的两端是截面变化的圆锥）。

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Specially manufacture automotive Chassis fittings, Steering parts, Ball joint, Tie rod end, Side rod Assy, Rock and Stabilizer link, Control arm, Idler arm, Pitman arm, Center link cross rod.

专业制造汽车底盘部件和转角及转动部件，产品有：悬挂球头、拉杆球头、控制臂球头、转角拉杆球头、拉杆总成、主邦汰、副邦汰等系列。

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