主要部件

This design firstly fixed ondesign scheme and selected basic components, and besides, developedthe reliability analysis of transmission system. The design ofMG300/701-WD Shearer's cutting unit. It is made up of a gearbox andmoderate breeze gear wheel transmission that the MG300/701-WD typemining machine cuts the cutting department, Cut the electricalmachinery of cutting department and put to fix up horizontally inthe rocker arm, The power that the motor outputs leans on a roundof transmission of department of gear wheel and planet round viathe tertiary straight tooth, Urge the cylinder to rotate finally.

本文首先确定了设计方案和选择了基本部件并开展了传动系统的可靠性分析，MG300/701-WD型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

The geometrical parameters of the wing and tail planform and few geometrical parameters of fuselage which have more on the configuration are optimized and those constant parameters are given values according to the designer's experience or the optimizations of the parts.

在优化时，将整机外形几何参数分为优化变量和固定参量；主要优化对总体外形影响较大的机翼、尾翼的平面形状几何参数以及少数几个机身的几何参数；对于固定参量，根据经验或部件层次上的优化结果给出固定值。

8 Please introduce four fixing parts of marine main engine Bed plate, cylinder block, scavenge air box and frame.

8请介绍四个固定的海洋主要发动机部件底板，缸体，清除空气中的框架。

The merits of its performance, it is representative of the advantages and disadvantages of pump performance, the anti-clogging sewage pump performance, the level of efficiency and cavitation performance, anti-abrasion performance mainly by the pressurized water pump and leaves room to ensure that the two major components.

其性能的优劣，也就代表泵性能的优劣，污水泵的抗堵塞性能，效率的高低，以及汽蚀性能，抗磨蚀性能主要是由叶泵和压水室两大部件来保证。

Then the function, overall structure and construction style of the main reducer are presented.

然后选择了部分零、部件的参数，并对主要的零部件进行了设计和计算。

Past design a 10 Ts four sign pillar pressure machine to flap spring coil to carry on dismantling to pack towards reduce, this pressure enters mainly from top plank module, scaleboard module, sign pillar, liquid to press system, small car module and some special partses, according to work need but design.

故设计10T四立柱压力机对减振弹簧进行拆装，本压力机主要由上板组件、底板组件、立柱、液压系统、小车组件及一些特殊部件，根据工作所需而设计的。

The main contents of the course include: Traditional ship design method based on empirical classification rules; Modern ship design method based on the first principles approach. Structural loads, loads combinations and loading criteria; Ship structural components configuration and arrangements; Ship initial scantling calculation based on the new rules; Ship total strength assessment including yielding, buckling and ultimate strength analysis.

主要内容包括：基于传统的船级社半经验公式的船舶设计方法；基于第一原理的现代结构设计方法；结构设计载荷，载荷组合和载荷衡准；结构部件选型和布置；基于新规范的结构构件初始尺寸计算；船舶结构整体强度分析，包括：屈服，失稳和终极强度分析。

And the main content of this paper is as the following:(1) The establishment of matching calculation platform of screw propeller and diesel engine.

柴油机是船舶的主要动力来源，螺旋桨是推进船舶前进的执行机构，二者性能的好坏以及匹配效果如何将直接影响到船舶的营运经济性能和航行安全性能；船舶冷却系统是柴油机高温受热部件正常、高效运行的重要保证，冷却系统的设计与选型适当与否将直接决定主机功率能否充分发挥。

Clearly and accurately recognizes and names all the major SDC components and software technologies used to develop the software solution.

清楚，更准确地认识和姓名所有主要sdc的部件和软件技术，用于发展软件解决方案）。

In the second part, the modelling problem of system reliability is studied from the point of view of sequential logic, so as to overcome the difficulties that the description and the analysis of large-complex repairable systems must depend on the state-transition graphs .

在第二部分中，论文从时序逻辑关系的角度研究了系统可靠性的描述问题，主要目的是为了寻求一种系统可靠性的模型方法，以解决目前多部件组成的复杂可修复系统的可靠性，必须依赖状态转移图才能进行描述与分析计算，使得对于比较大的系统的可靠性的描述和存储都有很大困难的状况。

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。