众文网1.跪求一篇关于机械类的外文文献附带中文翻译~~
You will learn about the effect of mold cooling, position of cooling channel, and cooling method for each part.The temperature of a mold has a great impact on molding.For example, if the temperature of the mold is too low, molten plastic will not flow smoothly through the runner or the gate, thus may not fill up in the cavity.On the other hand, if the temperature is too high, it will take too long to cool down and solidify the molten plastic, so the molding cycle will be longer.Therefore, by controlling the temperature of the mold, the following effects can be expected. Molding cycle can be shortened by reducing time for cooling and solidification of molten plastic. The surface quality or measurement accuracy of parts can be improved by better mold ability. Warp or stress in a part can be avoided that is caused when mold shrinkage varies due to different thickness, leading internal stress difference. Effective mold cooling is done by pouring cold water into the mold through a cooling channel. -------------------------------------------------------------------------------- Let''s see the detailed explanations of a cooling channel. -------------------------------------------------------------------------------- Position of Cooling Channel To effectively cool down a mold, decide on a position of the cooling channel considering the following remarks.Adjust the mold temperature by pouring a large amount of water having a temperature close to the temperature required for molding. Increase the number of the cooling channels rather than enlarge the diameter of one cooling channel. Make sure to cool a cores (insert) which are difficult to cool, such as a thick core, a large size slide core, or a loose core. Use mold material that has high heat conductivity to improve effectiveness of cold water. -------------------------------------------------------------------------------- Cavity Cooling Position a cooling channel as shown in the figure below for cavity cooling.Since the numbers shown are for a general case, it is necessary to consider the position of a cooling channel according to molding material, molding shape, or mold material type.Also, the cold water should flow from where the temperature of molten plastic is higher (closer to the gate) in the same direction as the molten plastic flows. Example of 2 dimensional cooling channel Pour cold water over the top side of parts. Example of 3 dimensional cooling channel Pour cold water to wrap parts.-------------------------------------------------------------------------------- Core (Insert) Cooling The cooling methods of core (insert) are listed below: If the core is too small for a cooling channel to go through:Cools down the core by inserting a copper rod or heat pipe that is highly efficient in heat conduction into the core and then cooling down the copper rod or heat pipe. If the core is large enough to go through a cooling channel.Cools down by jet method in which cold water is flushed through a pipe attached to the channel. Regular core cooling:Cools down by baffle method in which a dividing plate is attached in the cooling channel on the core and cold water is poured to cross over the plate. If there is a large cooling channel in a core:Coolds down by inserting metal fittings in the cooling channel and pouring cold water in a spiral stream.If the core is too small for a cooling channel or heat pipe to go through:Make a core of beryllium copper and cool it down.。
2.求一份机械类英文参考文献,5000个单词左右,带中文翻译,毕业设计
发个样例给你看看
大型轴齿轮专用机床设计的设计
摘要：结合机电一体化的需要，设计以单片机作为控制系统的X-Y型工作台。通过对X-Y型工作台机械结构设计和控制电路接口的设计，阐述了机电一体化设计中的共性和关键技术。这种工作台通常与整机设计成一个整体，其形状，尺寸，结构因机器类型不同而有较大差异，但其工作原理有着共同点。
关键词：X-Y数控十字滑台；机电一体化；单片机
Abstract : Combine mechanical-electrical integration's need, design a Model X-Y workingbench with one-chip computer as the of the control system. Though describing the workingbench mechanical's design of structure and interface of the control circuit to Model X-Y, have explained generality in the design of mechanical-electrical integration and its key technology. This kind of workingbench is usually designed with the complete machine into a whole , its form , size, there is a greater difference because types of the machine are different in the structure, but its operation principle has common point. Keywords: X-Y numerical control cross slippery platform; The mechanical-electrical integration; One-chip computer
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3.毕业论文的外文文献及翻译怎么弄
参考文献是在学术研究过程中，对某一著作或论文的整体的参考或借鉴.征引过的文献在注释中已注明，不再出现于文后参考文献中. 外文参考文献就是指论文是引用的文献原文是国外的，并非中国的。
原文就是指原作品，原件。即作者所写作品所用的语言。
如莎士比亚的《罗密欧与朱丽叶》原文是英语。 译文就是翻译过来的文字，如在中国也可以找到莎士比亚《罗密欧与朱丽叶》的中文版本。
这个中文版本就称为译文 回答者： xffjy - 见习魔法师 三级 10-22 11:52。
4.机械类英文文献+翻译
众所周知，在文学上有许多不同类型的组织配置的一个最有效的作品在这方面是明兹伯格（ 1979年） 。
他研究的一致性一方面环境与结构，以及其他要素之间的组织制度；按照米勒和明茨伯格的（ 1983年）的方法，文献表明分类组织配置与五个演变模式（结构简单， ，机械官僚主义，分区解决方案，专业官僚作风和adhocracy ） 。此外，能够识别不同的原型无法掩盖的认识存在一个连续的相同，更适合于看到的复杂性，真实的世界。
出于这个原因，许多分析用动态的方法'' ''这使得它很有趣，观察不同的各种组织。穆里斯及元朗（ 2001 ）建议的趋势在这个问题上的探索马航演化过程的各个阶段的一个组织的生命周期，并指出了不同条件的MAS正规化水平；根据穆里斯，组织调整，以不断变化的环境事实表示将他们安置在该公司的生命周期。
最后，根据文献的趋势从戈登和米勒的工作（ 1976年） ，该组织的变化影响公司马航结构。尤其是，管理战略，结构，风格各不相同系统在公司的生命周期，以保持一致性与外部环境。
出于这个原因，辩论马航之间的关系和公司的生命周期和组织之间的一致性和MAS设计是适时的。
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