wc=4.3%的钢在1148℃发生共晶转变形成莱氏体。
查看答案
碳在奥氏体中的溶解度随温度的升高而增加。
A. 对
B. 错
A. Choose the proper response to each of the statements and questions you hear. The statements and questions will be spoken twice.[音频]Q1: Thank you.
A. Me too.
B. Not at all.
C. Thank you.
D. Very much.
Q2: Good to see you.
And you?
B. Good to see you, too.
C. Thank you.
D. Yes, please.
Q3: How do you do?
A. Fine, thank you.
B. How do you do?
C. Nice to meet you.
D. Not very well.
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