毕业论文中的 感谢信

-精选财经经济类资料- -最新财经经济资料-感谢阅读- 1 毕业论文中的感谢信 请大家一起来欣赏以下这一篇精彩 的毕业论文中的感谢信范文： 感谢上帝，让我可以顺利的完成 毕业论文。回顾两年多以来的硕士学习 和科研工作，我在学业、科研和生活上 得到了众多老师、同学和朋友们的热心 帮助和有力支持。在此，我要向他们表 示我诚挚的谢意! 首先，今日论文的完稿，多承蒙 我导师杨*副教授和张*老师的悉心指导， 两位老师给我提供了良好的实验环境， 同时在科研上给了我大量的、极其有益 的建议和具体的指导，并在论文的撰写 和审稿中倾注了大量的心血。此外，杨 老师还在生活和思想上关心我、照顾我。 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 2 在此，我再次表示万分的感谢！ 其次，非常感谢实验室的硕 士的帮助，对我的学习和科研工作给予 了很大的帮助和支持，在我的科研工作 和论文撰写中，他们都给我提出了宝贵 的意见和建议，在此表示深深的谢意。 再次，特别谢谢我的一群同学和 朋友，一起生活和工作学习的美好时 光里，你们给予我的真诚的鼓励和无私 的帮助是终生难忘的。 最后，我要感谢父母和亲人多年 来在生活上无微不至的照顾和精神上的 支持，我能长这么大，还能够有机会读 书，甚至硕士毕业，真的不知道对你们 的付出说些什么，谁言寸草心，报得三 春辉。千言万语化作一句感恩的话：辛 苦了！ 主题： 翻译 1、man marine diesel engine man the latest large bore two storke man, engine is the ksz 90/163b series in cylinder number from 6 to 12 and -精选财经经济类资料- -最新财经经济资料-感谢阅读- 3 developing2,700kw/cyl. the engine operates at 122r/min, with an m.e.p of 13bar and a mean piston speed of 6.5m/s. the bedplate is of fabricated design and consists of weo i-shaped longitudinal girders with transverse menbers into which the cast steel bearing housings are welded. the thrust bearing casting is incorporated into the bedplate. columns have been replaced by frames constructed of box shaped longitudinal girders. thew fabricated top and bottom sections run the full length of the engine and are mounted on the bedplate. such an engine frame helps to stiffen the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom. the cast iron guideways for the crosshead are attached to the top section and seal off the crankcase. the cylinder jackets are individual -精选财经经济类资料- -最新财经经济资料-感谢阅读- 4 castings bolted together to form one continuous member. the one piece cylinder liners are fitted into the jackets from the top and a cast steel strong back is fitted in way of the combustion space to help absorb gas forces. the scavenge process is the man loop system and the scavenge and wxhaust ports are arranged in two tiers and are carried far around the liner. the vertical lands between the ports are cooled by water passing hrough cast in tubes and hence to passages arranged around the liner above the exhaust ports. each cylinder cover is in two parts, the lower section is of special thin walled forged steel permitting the area in way of the combustion gases to be intensively cooled whilst absorbing thermal stresses and this is held in position by an upper supporting unit of cast iron, which transmits the gas forces to the cylinder jackets via long studs. the joint face -精选财经经济类资料- -最新财经经济资料-感谢阅读- 5 between the cylinder cover and the liner is arranged as far from the combustion process as possible. the gas loads on the engine structure are constrained by means of hydraulic preloaded tie rods which connect the bedplate, frame sections and cylinder jackets into a single unit. the crankshaft is of the semi-built tybe, with the journal being shrunk into the forged or cast steel crank throws. with the exception of the six-cylinder engine, it is in two arts joined by fitted bolts. the coupling flange for attachment to the propeller shaft also accommodates the turning gear and is integrally forged with the crankshaft. the aft end section also incorporates a thrust collar. the drive for the camshaft gear train is taken from a spur gear which for a six cylinder engine is the couping end and for 7 to 12 sylinder engines the drive is located in the middle of the engine. -精选财经经济类资料- -最新财经经济资料-感谢阅读- 6 the piston crown is of forged steel and is designed for intensive cooling; the central supporting body is of cast steel and is mainly suvjected to compressive stress. the two components are bolted together and connected to the piston rod. a single piece piston skirt fitted with bronze rings guides the piston in the cylinder liner. the piston ring grooves for a standard engine are flame hardened against wear.the crosshead pin bearings are whte metal lined shells lubricated by means of highpressure pumps. the piston forces are transmitted over the entire length of the crosshead pin then to the connecting rod via the lower half single bearing shell. the principle of hydrostatic lubrication has been applied to the crosshead using high- pressure lubricators. this is achieved by means of high pressure rod,high pressure oil is delivered to the ower part of the crosshead bearing, the pumps press oil -精选财经经济类资料- -最新财经经济资料-感谢阅读- 7 film is maintained at all times and on all loads between the journal and the shell. scavenging of the cylinder liner is on the loop scavenge system and constant pressure of the exhaust gas is used to drive the turbochargers. during running up and in the lower partial load range the turbochargers are assisted by electrically driven auxiliary blowers connected before the compressors of the main blowers. in the upper power range the auxiliary blowers are disconnected. diffusers are fitted in the exhaust system and facilitate charge removal and scavenging in each cylinder. the diffuser also prevents pressure pulses from one cylinder interfering with another during operation. 2、man-b&w mc engine man-b&w mc man-b&w k90 mc-c engine is a large crosshead tybe two-stroke engine with a broe of 900mm, a 2,300mm stroke -精选财经经济类资料- -最新财经经济资料-感谢阅读- 8 and an operating speed of 104r/min. it is constructed with between six and twelve cylinders. developed as one of the extensive range of the manufacturers mc engines, it is of the power and speed best suited to large, fast container ships. the increase in running speed is obtained by a slight decrease in engine stroke. high thermal efficiency is maintained by an increase in mean effective pressure. construction can be considered generally as typical for the whole range. the engine bedplate is of rigid box form, fabricated from steel plates with main bearing supports of cast steel. welded a frames are assembled into a frame box which contains the crankcase, the crosshead guides and also supports the wheels for the chain drive of the camshaft. a cast iron cylinder frame accommodates the scavenge space between the cylinder -精选财经经济类资料- -最新财经经济资料-感谢阅读- 9 jacket and the diaphragm, both of which are water-cooled. long pre-stressed tie bolts are fitted between the top of the frame and the underside of the bedplate girders. the cylinder liner is of alloy cast iron, its upper flange lands on top of the frame and has bore cooling. it is secured by a forged steel cylinder cover which is also bore cooled and is shaped internally to accommodate most of the combustion space. cylinder luvricating oil is injected at one level in the liner. pistons have a chrome-molybdenum alloy steel crown with hard chrome-surfaced ring grooves in which four compression rings are fitted. in this particular model a protective layer of inconel is welded to part of the crown surface to prevent high temperature corrosion. the piston is oil cooled, oil being supplied by a telescopic gland to the crosshead and then through the piston rod. -精选财经经济类资料- -最新财经经济资料-感谢阅读- 10 it is returned from the crosshead to a slotted pipe in the crankcase. a short cast iron skirt is added. the crown is bolted to the piston rod at an inner support ring. surface hardening reduces wear on the piston rod at the diaphragm gland. the rod is bolted ata the top of a cylindrical crosshead which is of large diameter and incorporates a full-length bottom half- bearing shell. floating guide shoes are attached at each end. the crankshaft may be either semi- built up or of welded construcion, with large journals and pins. all crankcase hearings are of white metal. main bearings have thick shells, crankpin and crosshead bearing have thin-wall shells. white metal is used for the guide surfaces. the exhaust valves are operated hydraulically under oil pressure from cam-timed actuated pistons. they have air compressed springs which allows them to be rotated by vanes. the -精选财经经济类资料- -最新财经经济资料-感谢阅读- 11 valve spindles are usually manufactured by the hot isostatic pressure method, a compound nimonic and austenitic steel part construction. valve housing is cooling at its seat and spindle guide bush but its upper duct is uncooled to avoid low temperature corrosion.fuel pumps are cam driven and timed by the plunger helix. an adjustable barrel allows variable ignition timing to maintain combustion efficiency at low speed and can be adjusted to match the ignition quality of fuels. pump timing is changed for astern operation by a link connected at the cam roller guide which is activated by compressed air. each pump supplies three identical fuel injectors for the corresponding unit. injectors are uncooled but they circulate hot fuel oil directly white their needle valves are in the closed position. the engine operates with a constant -精选财经经济类资料- -最新财经经济资料-感谢阅读- 12 pressure system, with uncooled turbochargers. two auxiliary blowers are fitted to operate at low charge air pressure or at low engine revolutions. a number of waste heat recovery and power take-off systems can be operated under running conditions. 文献检索在毕业论文中的应用 中文系 093 班邓新花 毕业论文通常是一篇较长的有文 献资料佐证的学术论文，是高等学校毕 业生提交的有一定学术价值和学术水平 的文章。它是大学生从理论基础知识学 习到从事科学技术研究与创新活动的最 初尝试。学生在整个毕业论文写作中需 要查找大 量的文献资料，文献资料的查找 对一篇毕业论文写作的成功至关重要。 毕业论文选题中的文献检索 毕业论文题目的选定不是一下子 就能够确定的.若选择的毕业论文题目范 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 13 围较大，则写出来的毕业论文内容比较 空洞，难以结合实际；而选择的毕业论 文题目范围过于狭窄，又难以查找相关 文献资料，会让人感到无从下手.对于毕 业论文题目的确定，通常可以采取先选 出一个大的研究方向，再围绕该研究方 向查找文献资料，通过阅读、思考、分 析材料逐渐把毕业论文题目范围缩小的 方法。 毕业论文材料的收集与整理中的 文献检索 通过收集得到的材料一开始没有 必要都通读，可以先翻翻目录或索引， 找出与毕业论文论文题目有关或紧密相 连的章节。通过泛读，大致了解本论题 有关的研究现状和前景，避免重复别人 的工作。在这些过程中，有几样事情需 要做:概括出与毕业论文题目有关的研究 现状毕业论文不同于一般的论文，专业 的毕业论文是某一学科领域的科研成果 的描述与反映，没有研究，写作就无法 进行.而研究的一定前提是必须掌握尽可 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 14 能多的文献信息资料。一个人读的书越 多、查找的资料越全面，专业水平就越 高，创造性的思考可能性就越大，写出 来的论文质量就更高。因此，大学生在 写作毕业论文时，首先要学会如何检索 文献资料，懂得 文献查找的方法与技巧。 ，下面是我所了解的几种可以查 阅资料的地方 中国知识基础设施工程网。它是 由清华同方光盘股份有限公司和清华大 学中国学术期刊电子杂志负责牵头实施 的.其建立的 cnki 系列数据库包括期刊、 报纸、博硕士毕业论文等，收录了自 1994 年以来的国内公开出版的 6000 多 种期刊和报纸上发表 的文章的全文。网址是 http:/.cn 或 http:/。 可见，文献检索知识的应用对于 如何写好一篇文章是非常重要的，我相 信通过合理的运用，我们一定可以很好 的把论文写好。 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 15 一 .参考文献的类型以单字母方 式标识： 参考文献类型文献类型标示 专著 m 论文集 c 报纸文章 n 期刊文章 j 学位论文 d 报告 r 标准 s 专利 p 电子参考文献类型标识 数据库 db 计算机程序 cp 电子公告 eb 二. 主要责任者。多个责任者 之间以“， ”分隔，注意在本项数据中不 得出现缩写点“.”。主要责任者只列姓名， 其后不加“著 ”、 “ 编”、 “主编”、 “合编”等责任说明。 . 文献题名及版本。 文献类型 及 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 16 载体类型标识。 出版项。 文献出 处或电子文献的可 获得地址。 文献 起止页码。 文献标准编号。 三.电子文献的载体类型及其标识 对于非纸张型载体的电子文献， 当被引用为参考文献时需在参考文献类 型标识中同时标 明其载体类型。本规 范建议采用双字母表示电子文献载体类 型：磁带 mt，磁盘dk，光盘 cd，联机网络 ol，并以下列 格 式表示包括了文献载体类型的参考文献 类型标识： 文献类型标识/载体类型标识 如：db/ol 联机网上数 据库 db/mt 磁带数据库 m/cd 光盘图书 cp/dk 磁盘软件 j/ol 网上期刊 eb/ol 网上电子公告 以纸张为载体的传统文献在引作 参考文献时不必注明其载体类型。 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 17 四、文后参考文献表编排格式 参考文献按在正文中出现的先后 次序列表于文后；表上以“参考文献 ” 作为 标识；参考文献的序号左顶格， 并用数字加方括号表示，如1 、 2 、 ?，以与正 文中的指示序号格式一致。 参照 iso 690 及 iso 690-2，每一参考文 献条目的最后均以“. ”结束。各类参考 文献条目的编排格式及示例如下： 1.专著、论文集、学位论文、报 告 序号 主要责任者.文献题名 文献类型标识.出版地：出版者，出 版年.起止页码. 刘国钧，陈绍业，王凤翥.图书 馆目录m.北京：高等教育出版社， 1957.15-18. 辛希孟.信息技术与信息服务国 际研讨会论文集：a 集 c.北京：中 国社会科学出 版社，1994. 张筑生.微分半动力系统的不变 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 18 集d.北京：北京大学数学系数学研 究所，1983. 冯西桥.核反应堆压力管道与压 力容器的 lbb 分析r.北京：清华大 学核能技术设 计研究院，1997. 2.期刊文章 序号 主要责任者. 文献题名 j. 刊名，年，卷： 起止页码. 5 何龄修.读顾城南明史 j.中国史研究，1998，：167-173. 3.论文集中的析出文献 序号 析出文献主要责任者. 析出文献题名 a . 原文献主要责任 者. 原文 献题名 c. 出版地：出版 者，出版年. 析出文献起止页码. 7 钟文发.非线性规划在可燃 毒物配置中的应用a . 赵玮.运筹学的 理论与应用 中国运筹学会第五届大 会论文集c .西安：西安电子科技大 学出版社，1996.468-471. 4.报纸文章 序号 主要责任者. 文献题名 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 19 n. 报纸名，出版日期 . 8 谢希德.创造学习的新思路 n.人民日报，1998-12-25. 5国际、国家标准 序号 标准编号，标准名称 s. 9 gb/t 16159-1996，汉语拼 音正词法基本规则s. 6.专利 序号 专利所有者. 专利题名 p. 专利国别：专利号，出版日期. 10 姜锡洲.一种温热外敷药 制备方案p.中国专利： 881056073，1989-07-26. 7.电子文献 序号 主要