珠光体球化
参考答案:
珠光体球化是指钢中原来的珠光体中的片层状的渗碳体(在合金钢中称合金渗碳体或碳化物)在高温下长期运行,逐步改变自己的形状而为球状的现象。
-I as an actor for 5 yesra,but l never felt content.
-Is that why you turned writer?
A.worked
B.would work
C.have been working
D.have worked
若x=3是方程2x-4a=8+6x的解,则a______.