bnormal glow不規(guī)矩輝光放電arc discharge電弧放電belt皮帶centreless無心chrome bronze銘銅clearance angle后角corner shear drop直角壓陷deflection橈曲度discharge energy放電能量dressing修整dwell保壓flange凸緣gap間隙graphite石墨graphite contraction allowance電極縮小余量graphite holder電極夾座hair crack發(fā)裂horn電極臂jump跳刀magnetic base磁性座master graphite尺度電極pipe graphite管狀電極pulse脈沖rib working肋部加工roller electrode滾輪式電極rotary su***ce旋轉面shank柄部sharp edge銳角部tough bronze韌銅traverse搖臂tungsten bronze鎢青銅waviness波形起伏ork工件working allowance加工余量working dischard加工廢物