求翻译：利用电流通过焊件及其接触面产生的电阻热作为热源，将焊件局部加热到塑性或熔化状态，然后在外界压力作用下形成焊接接头的一种焊接方法。是什么意思？

The use of resistance heat generated by the current through the weldment its contact surface as a heat source, the the weldment local heating to the plastic or molten state, the formation of a welded joint welding method and then the effect of external pressure.

Using the current through the contact with solder and the resistance is generated as a source of heat, heat the solder-in local heating or melting the plastic state, and then the outside pressure of the solder joints formed a welding methods.

Using the electric current the resistance hot work which produces through the weldment and the contact face is the heat source, the weldment localized heating to the plasticity or the melting condition, then forms under the ambient pressure function the weld joint one welding method.

Use current resistance of heat generated by welding and its contact surface as heat source, weld plastic or local heating to melt, and then under outside pressure to form a welding method of the weld joint.

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