导电加热切削时，刀工接触区的状态与常规切削的不同。
The state of tool workpiece contact zone in Electric Hot Machining (EHM) is different from that of conventional cutting.
导电加热切削时，刀-工导电回路的状态与常规的电流回路有所不同。
The state of circuit of tool and workpiece in Electric Hot Machining (EHM) is different from that of conventional circuit.
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