... 多极发电机 multipolar generator 多极场 multipole fields 多极坐标 multipolar coordinates ...
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General expressions of the magnetic vector potential for multipole fields are derived.
推导出了用多极场空间谐波函数表示的磁矢位的通项表达式。
The stress fields of such structure around the opening were predicted using a three-dimensional, higher-order fast multipole boundary element method.
为精确模拟该结构的应力状况，该文提出一种三维高阶快速多极边界元法。
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