A.白渣B.玻璃渣C.黑渣D.黃白渣E.電石渣
A.真空時(shí)間不夠B.軟吹時(shí)間不足C.敞開澆注D.劃傷坯、接頭坯、波動(dòng)坯等
A.足量B.渣面全覆蓋C.不發(fā)紅D.微微波動(dòng)