... low-frequency direction finder低频测向器 low-frequency electric furnace低频电炉 low-frequency electrical porcelain低频电瓷 ...
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An ore smelting electric are furnace with low-frequency electric power could save electric energy and electrode, and raising their production furthermore.
低频电源应用于矿热炉中，能提高产量，节约电能与电极。
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