热辐射：受热表面发射能量的过程。
Thermal radiation: Process by which energy is emitted by a warm surface.
注意：请勿接触发热表面。
感应加热表面淬火的工件材料一般为中碳钢。
Induction surface hardening of the workpiece material is usually carbon steel.
感应加热表面淬火的工件材料一般为中碳钢。
Induction surface hardening of the workpiece material is usually carbon steel.
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