high-frequency group and low-frequency group equalizer 高低群均衡器 high-frequency hardening machine 高频淬火机 high-frequency induction furnace 高频感应炉 ..
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high frequency hardening machine 高频淬水机
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A high frequency induction hardening machine for chain pin was researched and designed.
设计并制造了一台锯链链轴高频感应加热淬火机械装置。
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