1、 The fracture of a steel rail was analyzed by means of metallographic microscope, SEM and EDS.
摘要用金相显微镜 、 扫描电镜、能谱仪分析了钢轨断裂原因.
来源:互联网
2、 Control system of large metallographic specimen cutting machine has been designed based on programmable controller PLC.
基于可编程控制器PLC设计了大型金相试样切割机的控制系统.
来源:互联网
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