但由于电动机的电磁惯性以及传动环节的机械惯性较大，并不利于实现机构的快速性。
However, due to relatively large electromagnetic inertia of the motor and mechanical inertia of the drive element, it is to some extent difficult to achieve speediness of the mechanism.
描述电磁现象的场量在不同的惯性系中有不同的量值，利用洛伦兹变换关系式导出它们之间的变换形式。
We can describe quantities of electric magnetic field in different inertia system, and use Lorentz transformations to educe the transformations between them.
同时本文在二群失稳模式的假设下，得出了机组电磁功率与转子相对惯性中心角的变化曲线为一正弦曲线。
Meanwhile, under two-group instability modes, it is discovered that the curves between electric power of generator unit and rotator's angle in relative to center of inertia is a sine curve.
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