英语翻译1 (a) Briefly explain the difference among edge,screw,an

英语翻译
1 (a) Briefly explain the difference among edge,screw,and mixed dislocations in terms of the relative orientation line and Burgers vector.
(b) For each of edge,screw,and mixed dislocation,cite the relationship between burgers vector and the direction line motion.
2 Based on our textbook and what we have learnt,cite not less than four techniques to strengthen and harden aluminum metal in aviation?
3 Briefly describe types of short-circuit diffusion and its contribution tothe overall diffusion flux.
4 (a) For each of edge,screw,and mixed dislocation,cite the relationship between the direction of the applied shear stress and the direction of dislocation line motion.
(b) Cite one reason why ceramic materials are,in general,harder yet more brittle than metals.
5 Describe and explain solid-solution strengthening for substitutional impurity atoms(smaller or larger than host atoms)in terms of lattice strain interactions with dislocations.
6 (a) Suppose that Li2O is added as an impurity to MgO,If the Li+ substitutes for Mg2+,what kind of vacancies would you expect to form?How many of these vacancies are created for every Li+ added?
(b) Suppose that MgCl2 is added asimpurity to MgO.If the Cl- substitutes for O2-,what kind of vacancies would you expect to form?How many of these vacancies are created for every Cl- added?

1（一）简要解释之间的差异优势,螺旋,和混合位错而言,相对方向线和伯格斯矢量.
（二）为每个边缘,螺旋,和混合位错,引用之间的关系,汉堡载体和方向运动.
2根据我们的教科书所学,举不少于四技术加强和硬化铝合金在航空?
3简要描述类型的短路扩散及其贡献给整体扩散通量.
4（一）每边,螺旋,和混合位错,引用之间的关系的方向的应用剪应力的方向和位错运动.
（二）引用的原因之一,陶瓷材料,一般来说,努力更脆比金属.
5描述和解释的固溶强化替代式杂质原子（小于或大于主机原子）方面的相互作用与位错的晶格应变.
6（一）假设氧化锂添加作为杂质氧化镁,如果李+替代Mg 2+,什么样的职位空缺,你会期望吗?许多这些空缺创建为每个李+?
（二）假设氯化镁被添加asimpurity氧化镁.如果氯取代氧气,什么样的职位空缺,你会期望吗?许多这些空缺创建为每个氯加入?