... Power of signals 信号功率 Power-series expansion method 幂级数展开的方法 Principal-phase function 主值相位函数 ...
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本文根据“均匀磁化”原理，利用幂级数展开方法，对“线圈代替型”及准线圈代替型平头四极透镜的场形进行了分析。
According to the principle of "Uniform magnetization", the field-shape of plane head quadrupole of "coil replacement" and "Quasi coil replacement" is analysed by means of series expansion.
第三种方法是把待求级数用基本初等函数的幂级数展开式表示出来；
The third one is to let series be expressed by basic elementary function's power series expansion;
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