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1、毕业论文中的感谢信第一篇：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。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
2、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！第二篇：毕业论文中英语短片主题： 翻译1、man marine diesel engine manthe latest large bore two storke man, e
3、ngine is the ksz 90/163b series in cylinder number from 6 to 12 and developing2,700kw(3,672hp)/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
4、 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 the thrust bearing casting is incorporated into the bedplate.columns have been replaced by frames constructed of box shaped longitudinal girders.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 b
5、edplate. 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 castings
6、 bolted together to form onecontinuous 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 ar
7、ranged 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 (更多内容请访问首页)thin
8、 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 between the
9、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-bui
10、lt 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 c
11、rankshaft. 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 middleof the engine.the piston crown is of forged steel an
12、d 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 p
13、iston 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 singl
14、e 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 film is maintained at all times an
15、d 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 au
16、xiliary 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 mcman-b&w k90 mc-c engine is a large crosshead tybe two-stroke engine with a broe of 900mm, a 2,30
