所述单元块用于制造磁芯，该磁芯应用于PFC（功率因数校正）用有源 滤波器、三相线路电抗器或汽车电子设备所用的电感器。
The unit block is used to produce cores applied to an active filter for PFC, a three-phase line reactor, or an inductor for automotive electronics.
对干式空心电抗器三相运行时的磁场分布进行了计算，并给出了几种情况下磁场分布的规律曲线。
The magnetic field distribution of three-phase dry-type reactor with air-core is calculated. Regular curves of magnetic-field distribution in some conditions are also presented in this paper.
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