主要部件

Main shaft parts are mainly composed of main shaft upper and lower cone frictions clutch M.N.

主轴部件主要是主轴，上下圆锥摩擦离合器MN组成的，其操纵装置主要由杠杆机构和拉簧组成。

According to orthogonal test, many factors affected by harvest quality of a double head of corn picker and straw forage cutter were found.

该文通过正交试验，找出了对玉米复式割台收获质量有影响的多种因素；分析了各因素对摘穗机构和茎秆切割输送机构的影响；通过设计主要的工作部件，确定了复式割台主要的工作参数；对设计后的复式割台进行了性能检测，各项指标均达到了国家标准要求。

In this paper, the research object is the XM18 spherical generator, in order to improve the dynamic behavior of the machine tool, the following aspects have been studied in this thesis: Firstly, based on the elasticity theory and finite element analysis theory, the finite element models of the lathe bed, dovetail, dovetail shelf, headstock, fanlike plank and millhead shelf, which were the main parts of the spherical generator, were built up using ANSYS9.0. And based on the modal analysis theory and FEM technology, the free modal and the constrained modal analysis of the main parts were studied. Accordance to the analytical results, put forword methods to optimize the key parts.

本课题以XM18球面铣磨机为研究对象，为了提高其动态特性，本文主要从以下几个方面进行研究：首先，根据弹性力学理论和有限元分析的基本理论，利用ANSYS9.0软件建立了铣磨机的主要零部件床身、燕尾、燕尾座、主轴箱、扇形板和磨头座的有限元模型，利用有限元法对主要零部件进行了自由模态和约束模态分析，并根据分析结果对关键部件提出了改进方案。

The presentnumerical control engine bed main engine factory primary mission isaccording to product design request production foundation rack and soon manufacture lathe bed, column and the function part which needswith it collection fits out the integrity the numerical control enginebed product, does not have the function part, does not have presenteach numerical control engine bed.

现在的数控机床主机厂的主要任务就是按产品设计要求生产制造床身、立柱等基础机架件并把所需的功能部件与之集装成完整的数控机床产品，没有功能部件，就没有现在的各种数控机床。

The boom is a key part on excavators and also a major load-bearing part.

动臂是挖掘机的关键部件，也是主要承力部件。

Combined system simulation with optimal control, selected a typical water cooled primary/secondary chilled water system, used the research achievements of Annex 30 in IEA for the reference, this work firstly presents both the basic component models and the control system component models. Secondly gives the main models for parameter identification and experiment validation. Finally a dynamic digital simulator is set up using TRNSYS as the platform to substitute a real system to test and evaluate some kinds of online optimal supervisory control strategies after giving some essential data file input and finishing all the PID controllers'tuning.

本文将空调系统的仿真模拟与优化控制相结合，首先选择比较典型的水冷式二级泵集中空调系统，在国际能源组织IEA第30子课题Annex 30多年研究成果的基础上，建立了系统各设备的部件模型和控制系统部件模型，对主要模型参数的辨识方法进行分析，同时对其准确性给予验证；在此基础上，建立了以TRNSYS为仿真平台的集中空调水系统数字仿真器；通过必备数据文件的输入和对所有下位机控制回路PID参数的调试，最终完成可用于评估各种上位机优化控制方案的空调水系统数字仿真器。

The design and practical research of oil-pumping unit using non-touching point control cabinet in desert oilfield;2. In this paper, the general situation of artificial lift in China is introduced, and the new development of electrical submersible pump production technology in abroad was analyzed, including electrical submersible pump,separator, protector, electrical motor, control cabinet , cable and so on.

分析了国内油田人工举升概况，重点介绍了国外电泵采油技术新进展，包括电潜泵、分离器、保护器、电机、控制柜、电缆等方面，给出了目前世界电潜泵的发展趋势主要是改进各种配套部件、加工工艺，以延长泵的使用寿命，电潜泵朝着深井、高压、大排量、高寿命、耐高温、多品种方向发展；电潜泵生产商研制了用于特殊情况下的特殊电潜泵及其部件，编制计算机程序进行泵的优化设计；最后指出了国内电泵采油存在的问题及下一步攻关方向。

Jinan Colombian-run special machinery and equipment Manufacturing Co., Ltd., Jinan, the main production and operating the second Machine Tool Plant production of various types of closed and open-mechanical press, multi-presses, stretching Press, A series of goal-planer, single - Arm planer, planing-machine, CNC gantry boring and milling machine accessories, parts, planing mill to the various parts and installation.

济南哥润特机械设备制造有限公司主要生产和经营济南第二机床厂生产的各种型号的闭式，开式机械压力机，多工位压力机，拉伸压力机，A系列龙门刨床，单臂刨床，刨边机，数控龙门镗铣床的配件、部件、刨改铣的各种部件及安装。

Tangshan 10 years for the metallurgical and mining machinery manufacturer, Tang steel production specifications sintering machine products supporting parts, there are all kinds of sintering machine's main drive transmission, flexible, transmission parts, the torque coupling, security coupling , Security devices, roller fabrics, elastic pull bar, flexible poles, torque-device, the second envelope worm gear box and vice, Touwei seal and various cold rolling mill equipment and accessories saw, roller Production of special equipment.

十多年来为唐山冶金矿山机械厂、唐钢生产各种规格烧结机产品配套部件，主要有各种烧结机的主驱动传动、柔性传动装置部件、定扭矩联轴器、安全联轴器、安全保护装置、辊式布料器、弹性拉压杆、弹性支杆、扭力杆装置、二次包络蜗轮副及箱体、头尾密封装置和各种轧机设备配件及冷锯、托辊生产专用设备。

The pulse sequences for achieving some logic operations of cycles and transpositions of quantum states have been devised.

本文的主要工作包括以下内容：●通过分析在核磁共振实验中实现基本通用量子逻辑门的脉冲系列，设计了实现对量子态进行各种轮换操作、对换操作的逻辑部件的脉冲系列，在实验中用这些脉冲系列实现了预先设计逻辑部件的逻辑功能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。