The microstructure and fracture process of an eutectoid pearlitic steel have been observation and analysed by means of electron-diffraction-contrast technique and SEM.
应用电子衍衬技术和扫描电镜等手段，对共析珠光体轨钢的微观结构和断裂过程，进行了观察和分析。
Pearlitic transformation in steel is a typical diffusion eutectoid transition.
钢中珠光体转变属典型的扩散型共析转变。
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