导电电极臂(The steel in the ladle is heated with the aid of three graphite electrodes which are in slag layer and supported by current conducting arms. 钢包钢水使用三根石墨电极加热，电极埋人渣层，由导流电极臂支撑。)
直流电弧炉(Direct current electric arc furnace has only one electrode mast arm and a single graphite electrode which acts as the cathode. 直流电弧炉只有一个电极横臂和一根作为阴极的石墨电极。)
