line-frequency coreless induction furnace ==> 无芯工频感应电炉 line frequency furnace ==> 工频炉 line-frequency furnace ==> 工频感应电炉 ..
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line-frequency furnace 工频感应电炉
line frequency induction furnace 工频感应炉
line-frequency coreless induction furnace 无芯工频感应电炉
line-frequency cored induction furnace 工频有芯感应炉
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