复杂的机构

It is applied to sorts of locomotive engine , In course of revolving of Crank and Connecting Rod Mechanism, there are revolving of the crankshaft , swinging of the connecting rod and reciprocating motion, so its motion state is complex, and periodic unbalanced force, by a few components, is great.

曲柄连杆机构在高速运转过程中，有曲轴的转动、连杆的摆动及活塞的往复运动，其运动状态复杂，各个部件所产生的周期性不平衡惯性力大，是引起发动机振动的主要原因。

Considering its complex geometric topology, multi states of self-equilibrium stress and modes of inextensional mechanisms, a prestress optimization strategy was proposed to solve the final feasible prestress distribution problem of the structures with multi states of self- equilibrium stress, where the decomposition and assembly method of modal matrix, the theory of structural equilibrium matrix and the singular value decomposition method were utilized.

考虑该结构几何拓扑复杂、多自应力模态与机构位移模态的特点，应用平衡矩阵理论与奇异值分解算法，通过模态矩阵的分解组合方法，给出一种具有一定普遍意义的预应力优化策略，使多自应力模态结构体系的最终可行预应力分布求解得以简便的实现。

It avoids the parallelogrammical output machine with a complicated planetary wheel system and the flexible wheel of resonance wave transmission, shortens the movement chain observably and reduces the loss of movement transfer.

偏心轮推杆行星传动属于活齿少齿差传动，它的推杆结构成功地解决了输入轴与输出轴同轴的问题，避免了复杂行星轮系的平行四边形输出机构和谐波传动的柔轮，显著缩短了运动链、减少了运动传递的损失。

After 1990, the realization of some pivotally technical methods and the development of materials growth and devices technics made GaN to be the research focus of the world.

采用上述方法制备GaN，工艺复杂，设备昂贵，限制了GaN材料的制备、生产和应用。现在，国际上有许多科研机构正在探索新的工艺方法，试图在合适的衬底上制备高质量的GaN薄膜。

As the internationalization of modern business development , especially in the field of retailing, it's necessary for enterprises to establish branches in a national even a world wide scale which calls for a rush improvement in management. At the same time, the large amount of the goods storage and the huge building areas make the goods merchandise inventory become remarkably complicated which result in high cost and inefficiency. What's more, data recording is a tremendous and time-consuming work as well as data analyzing if made manually; moreover, the monitor of the cameras yet cannot perform in an all-round way leaving some of the places unmonitored.

现代商业发展的模式渐渐走向国际化，特别是在零售业这一方面，在全国乃至全世界各地设立分支机构已经是企业发展的必经之路，因而在管理模式上迫切需要得到改进；而在此同时，现代商场庞大的货物存储总量和巨大的建筑面积使得商品盘存变得极为复杂，商场货品盘存高成本低效率；人工记录数据不仅工作量大，进行数据分析时也是一项费时费力的工作；同时由于摄像头的监控难以实现全方位，有不可避免的死角存在。

Simultaneously, have room to fail, maneuver, and be reoriented to fit changing conditions and new learning, or shift fromone system to another to achieve a

在这个复杂、不可预测的世界行动，这套人类制度是必须的，把合理性与人类机构、学习和接受相结合，这与被管理的系统是不同的。

Turning the dish drives to usually adopt the machine method,because the machine drives of spreading and moving the chain is long,spreading to move the parts many,spread to move the device complicated,on the some special artesian well equipments,will often appear whole machine set arrange the difficult circumstance,and host weight over big,affect the host moves to carry function.

0前言转盘是钻机或修井机旋转系统的主要部件，把发动机的旋转运动通过减速机构变为垂直旋转运动。转盘驱动通常采用机械方式，由于机械驱动的传动链长，传动部件多，传动装置复杂，在一些特殊的钻井设备上，常会出现整机台面布置困难的情况，且主机重量过大，影响主机的移动性能。

For kinematic pairs modularizing, the kinematic function vertices, opening edges and self-closed edges were introduced to the elementary linear graph, and enrich the symbols of the linear graph theory. The various combinations consisted of mechanical members were dealt with as a whole module separativly, instead of being assembled with many basic modules belonged to conventional package.

针对运动副组件的模块化，提出了机构功能点、开口边线、自封闭边线等概念，对传统线性图的工具元素进行了扩充；依据复杂机械组合件的独立性，把它们作为整体建立独立的模块，以取代传统环境中的基本元件连接建模。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷