在很多情况下，永磁回复线的起始点是由其极化磁系统的工作状态决定的。
It is decided by the working status of the polarized magnetic system in many instances.
极化磁系统永磁回复线的起始点是用各种方法对其进行计算的前提和基础。
The starting point of the recoil line of permanent magnet is the base and the premise for the various calculations of the polarized magnetic system.
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