One-half of each solenoid loop was replaced with an aluminum card into which tiny vicalloy bar magnets were embedded.
每个螺线管回路的一半都换成了铝卡，其中嵌入了细小的维卡合金棒形磁铁。
One-half of each solenoid loop was replaced with an aluminum card into which tiny vicalloy bar magnets were embedded.
每个螺线管回路的一半都换成了铝卡，其中嵌入了细小的维卡合金棒形磁铁。
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