按含碳量分,下列属于低碳钢的是() A: 0.00021799999999999999 B: 0.001 C: 0.004 D: 0.012 E: 0.02
按含碳量分,下列属于低碳钢的是() A: 0.00021799999999999999 B: 0.001 C: 0.004 D: 0.012 E: 0.02
1
按含碳量分,下列属于低碳钢的是() A: 0.00021799999999999999 B: 0.001 C: 0.004 D: 0.012 E: 0.02