Alternate pole, which has complex shape and strict limit in its size and quality, is the key part in the automobile generator, so it is difficult to produce.

磁极是汽车发电机上的关键零件，其形状复杂，尺寸精度和内在质量要求比较高，制造难度大。

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According to the curve shape above mentioned trajectory the transient stability index of generator after accident occurred can be quickly calculated.

特点是采用曲线拟合的方式，根据上述轨迹的曲线形状，可以快速算得发电机在故障后的暂态稳定指标。

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This paper analyzes and studies the structure, dimensions, shape of a bubble generator, and the main structure dimensions that will influence the properties of the bubble generator.

分析研究了气泡发生器的结构、尺寸、形状要求，以及影响气泡发生器性能的主要结构尺寸。

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