零件

On the basis of these studies, the process of the electroforming complex thin-walled parts has been researched and qualified parts are got.

最后，在上述研究基础上对薄壁零件的电铸加工工艺进行了大量试验并制作出了合格的薄壁零件。

To provide methods for the study of laser rapid prototyping system based on polar coordinates, especially it apply to featheredge spheroid parts; The make-up of SLS rapid prototyping system based on polar coor.

本文基于激光变长线快速成型系统和激光点扫描快速成型系统的特征，激光选区烧结成型工艺因其适用于中小型零件，且选用材料广泛，对其研究具有现实意义；为基于极坐标系的激光快速成型系统的研究提供了素材，特别是对于薄壁回转体零件具有较强的针对性；详实地讨论了基于极坐标的激光选区烧结系统的组成。

All parts, end-items or components, subsystems, and systems for PV Testing endmust be completed before the FEU Build according to the engineering specifications in the Pre-Launch Control Plan.

Pre必须在根据工程规范建立PEU前，在试生产控制计划中完成所有零件，产品最终必须在根据工程规范建立PEU前，在试生产控制计划中完成所有零件，产品最终阶段基组成部分，子系统和系统的PV试验。

Superplastic forming process of hemispherical ceramic part wasanalyzed using finite element method to improve the thickness distribution of thedimension.

对半球形陶瓷零件超塑成形过程进行了有限元分析，从而改善零件的壁厚分布。

The moire bugle, wave separator and gear case is important part of process planning for antennae components.

波纹喇叭、分波器、齿轮传动箱三类零件的工艺设计是天线零件工艺设计的重要部分。

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

本文对冷冲压技术的分类、特点及发展方向作了简略概述；论述了冲压零件的形成原理、基本模具结构与运动过程及其设计原理；对典型的冲压件模具进行了设计：大直径三通管冲压复合模设计解决了大直径三通管的加工难题、带有浮动凸凹模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、消音器后补碗落料、拉深、冲孔、翻边复合模设计、一模两件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链卷圆成形工艺及模具设计、半自动送料切角装置设计、滑板式送料拉深、冲孔、翻边模设计实现自动送料、长管多孔冲模设计、带凸缘台阶方盒形零件拉深模和盒形件侧壁小孔翻孔模。

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,代写医学论文,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

本文对冷冲压技术的分类、特点及发展方向作了简略概述；论述了冲压零件的形成原理、基本模具结构与运动过程及其设计原理；对典型的冲压件模具入行了设计：大直径三通管冲压复合模设计盖世了大直径三通管的加工难题、带有浮动凸凹模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、消音器后补碗落料、拉深、冲孔、翻边复合模设计、一模两件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链卷圆成形工艺及模具设计、半自动送料切角装置设计、滑板式送料拉深、冲孔、翻边模设计实现自动送料、长管多孔冲模设计、带凸缘台阶方盒形零件拉深模和盒形件侧壁小孔翻孔模。

Manufacturing cost is a guide line to evaluate manufacturability of a part and it is a feedback to product design.

机械零件制造成本是评价零件可制造性的一个指标，对产品设计是一种反馈。

In this paper, the deep drawing of TA0 titanium hemispherical part is studied by numerical simulation and experiment method.

以TA0薄壁半球形零件冷拉深成形为研究对象，采用数值模拟与试验研究相结合的手段，在研究该拉伸成形过程中零件的应变及壁厚分布规律及组织演变规律的基础上，对破裂、起皱缺陷位置进行了预测。

Under microcomputer circumstance a human-interactive graphic system is developed. An algorithm for hidden line removal based on improved appel algorithm and an algorithm for fast shaded graph are presented.

在表达比较复杂的零件内部结构时，设计和实现了一个任意三维形体阶梯剖切算法，可以对任意零件实体进行任意方向、任意位置连续的多刀剖切，并且剖切操作方便。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。