英语翻译Reference letter(Control Theories)Dear Sir or Madam:I gl

英语翻译
Reference letter(Control Theories)
Dear Sir or Madam:
I gladly recommend my student Chang Cheng to you for his application to your graduate school program.
Chang Cheng enrolled in my courses of "Digital Control System" and "Optimization Theory" during his senior year.In the former,he got a good score of 86/100 and ranked within top 5% of the class .In the latter which was opened for graduate students,he was one of the only three undergraduates who took this course.Throught the period of instruction,I found him an in quistive and attentive person.He always concentrated on my lectures and absorb knowledge profoundly.Although some of the assignments were somewhat difficult to the average students,he could solved them completely and correctly owing to his logical and analytical thinking and the clear conception to the theory.He also impressed me in the final project - developing a program to resolve the free-variable optimal problem.He thought deeply and did it skillfully,so the program could work very well even for the special cases (like cycling...)but still economically and easy to read.So I gave him the good score and was better than many graduate students.
Besides,He also took a cluster of courses in Control and Systems Theory in his junior and senior years and always got good scores .Upon my observation,Chang Cheng has been fully prepared to under take a Master in your institute in the control and system fields.I am confident that with the ingenious learning ability and diligent attitude that he has shown in the courses,he will be able to perform outstandingly even in a highly vigorous program.I have no hesitation in recommending him and hope that you will consider his application favorably.
Sincerely,

推荐信 (控制理论)
敬启者或女士:
我高兴地为他的申请跟你推荐我的学生张 Cheng 你的研究所计画.
张 Cheng 在他的资深的年期间在我的 " 数传控制制度 " 和 " 最佳化理论 " 的课程中登记.以先前者,他得到好 86/100 得分而且在最高 5% 的班级里面排列了.在后者哪一个被打开为研究生,他是这只有三个选了这课程的大学生之一.Throught 指导的时期,我发现他一在 quistive 和注意的人中.他总是专注于我的演讲而且极深地吸收知识.虽然对平均的学生,一些任务很略微困难,但是他可以完全地解决了他们和正确未付对对理论的他的合乎逻辑而分析思考和清楚的怀孕.他也在最后人中使我有印象了发展计画的一个计画解决自由者-可变的最佳问题.他深深地想而且巧妙地做了它,因此,计画可以为特别的情形甚至非常很好地运作 (像骑脚踏车兜风..)但是仍然经济上地和容易的读.因此我给予了他好得分而且是比许多好的研究生.
此外,他也在他的年少的而且资深数年内选了控制的课程的群而且选了系统理论而且总是得到了好得分.在我的观察之上,张 Cheng 有完全准备到在控制和系统领域的你的学会带一个主人之下.我是自信的,藉由他已经在课程中显示的灵敏的学问能力和勤勉的态度,他将会能够甚至在一个高度地精力充沛的计画中杰出地运行.我在推荐他和你将会顺利地考虑他的申请的希望方面没有暂停.
敬上