Using two kinds of magnification of the metaloscope to observe the zonal carbonide, scientific basis for evaluating correctly the quality of the steel is provided.
用金相显微镜两种不同倍数观察带状碳化物，为正确评定钢材质量提供依据。
Using two kinds of magnification of the metaloscope to observe the zonal carbonide, scientific basis for evaluating correctly the quality of the steel is provided.
用金相显微镜两种不同倍数观察带状碳化物，为正确评定钢材质量提供依据。
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