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熔炼废铝合金的各种炉的特性见表2,感应电炉的电磁力作用方向如图4所示,而熔炼铝及铝合金的各种感应炉的频率范围见
The characteristics of various furnaces for smelting waste aluminum alloy are shown in Table 2, the direction of electromagnetic force of induction furnace is shown in Figure 4, and the frequency range of various induction furnaces for smelting aluminum and aluminum alloy