金虫 (小有名气)
2货加吃货，为快乐奋斗 ![]()
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【答案】应助回帖
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s48009718: 金币+6, 翻译EPI+1, ★★★★★最佳答案, 谢谢 2012-08-16 11:05:19
By being observed through Metallurgical Microscopeand scanning electron microscope, the low carbon cast steel were refined after addition of Ti elements while high ratio Ti was not suggested。Mg-deoxidizing products alone cannot induce intra-granular ferrite,however the number of Al-oxide significant decrease in the sample steel into which added Mg element 。In addition, Mn-Ti,Mn-Ti-Al,Mn-Mg-Ti-Al composite inclusions can be the core inducing intra-granular ferrite formation, the nucleation effect of the inclusion which contain high Al element leading low MnS absorption is not ideal as well as TiN n。MnS alone can not have the effect on grain refining. Meanwhile it was found that MnS plays a vital role on grain refinement,and only the inclusions adsorpt MnS could format the complex inclusions ,which can be the core of the intra-granular ferrite.
乖乖。。同学。，。一般用被动语态比较好。注意基本的单词格式拼写错误。。。如果英语不是太好就写简单句，用句号结束就可以了。不用大段大段一个句号就没有。
意思相同即可，没必要每段都和中文格式、句式一致的。
希望有用。 |
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一志愿北京科技材料科学与工程288分，求调剂
+14