英语翻译1． why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?2． How should ones process the conductor made of copper wire a

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英语翻译1． why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?2． How should ones process the conductor made of copper wire a
英语翻译
1． why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?
2． How should ones process the conductor made of copper wire after cold-drawing it?why?
3． The melting points of Zn,AL,and Sn are known to be 419.c,660.c and 232.c
Respectively Calculate the minimum temperatures of recrystallization of them?
4.What is the difference between a phase and a microconstituent?
5.What is carbon content of an iron-carbon alloy for which the fraction of total ferrite is 0.94?
6.Why are manganese sulphide inclusions in steel preferable to iron sulphide ones?
7.“Quality of high-carbon steel is better than that of low-carbon steel”.is right this statement?
What standard is quality (good or bad) of steel specified according to?Why?
8.(a) What is the distinction betweem hypoeutoid and hypereutectoid steels?
(b) In a hypoeutectoid steel,both eutectoid and proeutectoid ferrit exsist.Explain the difference between them.What will be the carbon concentration in each?
9.Completely label Figure :完全分类
10.Draw two isomorphous phase diagrams ,one with a large freezing range between the liquidus and solidus,the other with a small freezing range between the liquidus and solidus.In which of the two alloy systems do you expect a greater amount of segregation?Explain
11.Analyze the crystallization procrss of alloy I in figure3-18
12.Refer to Figure 3-30.If the first precipitate to be formed when an alloy is cooled has 60 percent solid B,determine the overall liquid composition.
13.Once more refer to Figure3-30.At an overall composition of 50 percent B,it is found that the liquid phase contains 40 percent B and the solid phase contains 80 percent B.Determine the percentage of the solid and the liquid present.

英语翻译1． why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?2． How should ones process the conductor made of copper wire a
1． why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?
为什么精加工的多齿金属不仅在强度和硬度上,而且在塑性和韧性方面都比常温下的粗糙双齿金属要好
2． How should ones process the conductor made of copper wire after cold-drawing it?why?
如何加工处理冷却拉深以后的铜线材制造的导体?为什么
3． The melting points of Zn,AL,and Sn are known to be 419.c,660.c and 232.c
Respectively Calculate the minimum temperatures of recrystallization of them?
锌,铝和锡的熔点我们都知道是419摄氏度,660摄氏度和232摄氏度,分别计算他们达到结晶的最底温度
4.What is the difference between a phase and a microconstituent?
相位和微元素的不同点?
5.What is carbon content of an iron-carbon alloy for which the fraction of total ferrite is 0.94?
铁碳合金的碳含量是多少,对于全部铁酸盐中的每一小部分的含量是0.94?
6.Why are manganese sulphide inclusions in steel preferable to iron sulphide ones?
为什么钢中的锰流化物夹杂比铁中的流化物要好
7.“Quality of high-carbon steel is better than that of low-carbon steel”.is right this statement?
高碳钢的质量比低碳钢要好,正确吗?
What standard is quality (good or bad) of steel specified according to?Why?
关于钢的质量好坏的标准是依据什么?为什么
8.(a) What is the distinction betweem hypoeutoid and hypereutectoid steels?
A 和B两种钢的区别是什么?
(b) In a hypoeutectoid steel,both eutectoid and proeutectoid ferrit exsist.Explain the difference between them.What will be the carbon concentration in each?
在B种钢中,
9.Completely label Figure :完全分类
10.Draw two isomorphous phase diagrams ,one with a large freezing range between the liquidus and solidus,the other with a small freezing range between the liquidus and solidus.In which of the two alloy systems do you expect a greater amount of segregation?Explain
11.Analyze the crystallization procrss of alloy I in figure3-18
12.Refer to Figure 3-30.If the first precipitate to be formed when an alloy is cooled has 60 percent solid B,determine the overall liquid composition.
13.Once more refer to Figure3-30.At an overall composition of 50 percent B,it is found that the liquid phase contains 40 percent B and the solid phase contains 80 percent B.Determine the percentage of the solid and the liquid present.

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1? 为什么金属与更加美好的五谷有不仅更高的力量和坚硬而且更高的可塑性和韧性比那些粗面在室温? 2? 部分怎么应该处理指挥由铜导线制成在冷图画以后it?why? 3? 熔点Zn 、AL, 并且锡知道是419.c, 660.c 和232.c 各自地计算极小的温度再结晶他们? 4. 什么是区别在阶段和微成分之间? 5. 什么是总纯铁分数是0.94 钢碳合金的碳内容? 6. 为什么锰硫化物包括是在钢里更好的对钢硫化物一个? 7. "高碳钢的质量好比那低碳steel".is 纠正这个声明? 什么标准质量是(好或坏) 钢指定了达成协议to?Why 吗? 8. (a) 什么是分别betweem hypoeutoid 和hypereutectoid 钢? (b) 在hypoeutectoid 钢, eutectoid 和proeutectoid ferrit exsist.Explain 区别在them.What 之间将是碳含量在每个? 9. 完全标签形象:???? 10. 凹道二个合金系统您盼望最大的数额segregation?Explain 11.Analyze 结晶procrss 合金I 在figure3-18 12.Refer 图的二张同态的相位图, 一个以一个大结冰的范围在liquidus 和先令之间, 其他以一个小结冰的范围在liquidus 之间和solidus.In 3-30.If 第一沉淀物被形成当合金冷却有百分之60 坚实B, 确定整体液体构成。13.Once 更提到Figure3-30.At 百分之50 B 的整体构成, 它被发现液体阶段包含百分之40 B 并且固相包含百分之80 B.Determine 坚实和液体礼物的百分比。

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1.为什么金属用更好谷与粗糙谷的那些相比,在室温温度方面有不仅更高力量和坚硬但是也更高可塑性和坚韧?
2.那些应该怎样加工在冷-图画it?why以后使指挥铜电报?
4.一阶段和一微成分之间的差异是什么
5.一为其总铁酸盐的一小部分是0.94的铁-碳合金的碳内容是什么
6.为什么锰硫化物接受参加钢是更可取的熨烫硫化物那些
11..Analyze合金的结晶pro...

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