然而目前所获得的实际材料的磁能积远低于理论计算值。
Up to now, however, practical magnetic energy product is more lower than it.
具有较高的磁能积、极低的温度系数，其使用温度可高达300度。
Its biggest advantage is its high working temperature — 300 degree centigrade.
具有较高的磁能积、极低的温度系数，其使用温度可高达300度。
Its biggest advantage is its high working temperature — 300 degree centigrade.
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