1·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。
2·It is important to understand the difference of bainite transformation and eutectoid decomposition in steels.
研究贝氏体相变的特点，弄清贝氏体相变反应与共析分解的区别极为重要。