问题
问答题 简答题
简述影响马氏体开始转变温度Ms的因素有哪些？
答案
参考答案：
影响因素有三方面：一是化学成分，除Al和Co外钢中常见的合金元素都降低Ms点，随着碳量的升高Ms点降低；二是提高加热温度和延长保温时间均能提高Ms点；三是高的压应力可显著降低Ms点。
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简述影响马氏体开始转变温度Ms的因素有哪些？
参考答案：
影响因素有三方面：一是化学成分，除Al和Co外钢中常见的合金元素都降低Ms点，随着碳量的升高Ms点降低；二是提高加热温度和延长保温时间均能提高Ms点；三是高的压应力可显著降低Ms点。
A funny thing happened to my sister Tina last month. She lives in Japan and teaches English. In Japan, people don’t usually wear their outdoor shoes in the house or in school, and a lot of buildings have places for shoes. So her school ahs a special place for shoes. 小题1: Tina teaches English in the evening. One Friday, she went to school, and she put her shoes in the shoe box—as usual. Then she had an interesting spoken English class with her students. 小题2: But to her surprise, her shoes weren’t in the box. There was only one pair of those there, and they weren’t her hoes! She had to get home in a hurry. 小题3: On Monday, at her next English class, her shoes were in a shopping bag on her desk! There was a note that said, “I’m so sorry. I took your shoes by mistake!” 小题4: Somebody felt a lot of shame!
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