对于配数控用，应选择非接触起弧方式。
To match with numerical control, should choose the contact arcs way.
但电缆长，会减低其起弧穿孔和切割能力。
But cable long, can reduce the arcs perforation and cutting ability.
一般电流大于100a的等离子电源，都是非接触起弧方式。
General current more than 100 a plasma power, are not contact arcs way.
一般电流大于100a的等离子电源，都是非接触起弧方式。
General current more than 100 a plasma power, are not contact arcs way.
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