零件

The interface and concrete operations of the prototype system and results of machining features recognition are illustrated by examples, in which there is a typical shaft, a 2.5D part without conicoid and a 2.5D part with conicoid.

分别以一个典型的轴类零件，一个不具有二次曲面的2.5维零件，以及一个具有二次曲面的2.5维零件为例，介绍了原型系统的界面和加工特征识别的具体过程及识别的最终结果。

It take casting, machining ductile iron parts as principal (parts used in automobile, general machinery and valve parts), and also design and sale automatic flabellate pouring machine and furniture, etc.

以铸造、加工和销售球墨铸铁等精密铸件（汽车零件、阀门零件和通用机械零件）为主，设计、销售扇形浇注机等铸造机械、金属家具为辅。

One of its purpose is to generate a collision-free inspection program and measurement uncertainties of inspected parameters in the program for assessment of inspectability after the part is designed but hasn't been manufactured.

其目的之一是为了在零件设计出来以后，未加工之前，能得到一个无碰撞的零件测量程序，以及与这个无碰撞的零件测量程序相对应的各个被测参数的测量不确定度，作可测量性评估之用。

When manufacture part which with curved surface by of contour machining,the shape of profile modeling is not as same as the part,they also without simple relation of minify or magnify.

仿形车、铣加工曲面零件，主要是通过靠模曲线来实现的，靠模曲线形状通过带有滚轮的靠模触头传递到刀具上，加工出零件所需的曲面形状。靠模曲线与零件曲面有什么样的关系？

One of the tubular elements (11, 12) comprises an unthreaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealed contact with the opposite surface (41; 8) of the other element after the first and second tubular elements have been screwed, have expanded and generated elastic return forces.

其中二个管形零件(11；12)包括一个延伸在它的螺纹部分和它的自由端之间并且具有一个密封表面(40；7)的无螺纹凸缘(38；5)，这个密封表面(40；7)在旋拧、直径膨胀以及然后产生第一和第二管形零件的弹性恢复力后与另一个零件的相对表面(41；8)密封接触。

According to abraded shafts in the use, this text analyzes abrasion cause of shafts.

针对轴类零件在使用过程中常会出现磨损的情况，对轴类零件的磨损及其原因进行了分析，介绍了近年来轴类零件修复技术的发展，包括喷涂技术、滚花技术、镀覆技术和堆焊技术，并总结了这些修复工艺的特点和应用情况。

Although only a third the weight of steel, aluminium components usually have to be made a bit beefier to replace steel ones, which limits the overall weight savings to about half.

虽然铝材料的重量是钢铁的三分之一，铝零件通常要比其所代替的钢铁零件更加粗壮些，而这又铝零件的重量优势减少了近一半。

A kind of special encasing material is developed and used to reinforce the part in the project, which can compound different color according to different requirement .It provides obvious gray scale contrast between the image of part and encasing material and it can obtain the accurate contour of a parts cross section. This kind of material has good machinability, additives and proper toughness. The whole encasing process is simple and rapid.

本项目开发研制了一种专用封装材料来封装被测零件，封装材料根据不同的需要，可以配置出不同的颜色，使得与被测零件的图象颜色具有较明显差别，能够提取出精确的零件截面的边界轮廓，并且具有良好的粘合性能、机械性能和适当的韧性，操作也比较简单。

It is urgent to solve how to produce it efficiently and economically.In this paper, with the guidance of precision forming complex components, basing on the forming theory of obturated-extrusion, combining the technique of hot extrusion, considering the characteristics of steering knuckle, so the one-step precision obturated lateral-bend extrusion forming method and the two-step forming method are presented.

本文以复杂零件的精密成形为指导思想，根据闭塞挤压成形理论，结合热挤压技术，针对轿车转向节零件的自身特点，提出轿车转向节零件的闭塞侧弯挤压精密一步成形法和闭塞侧弯挤压精密预制坯与开式终锻相结合的两步成形法两种工艺。

The actions of quick feed, workpiece feed and quickreturn of the press can be realized automatically under the program control, it is suitable for the arber of axle sleeve parts and the bending, shelling and pressing of sections parts and the stretching of parts, it can be used for flow assembly of car, machine, automobile electric,appliance motorcycle absorber and air conditioner electric appliance compared with common hydraulic press, Type YKT high speed hydraulic press is of high accuracy of adjustment, quick action, stable repeat accuracy and safe reliable operation.

YKT型快速液压机是一种多功能的液压机床，在程序控制下自动实现压机的快进、工进、快速返回等动作，适用于轴套类零件的压装，型材零件的弯曲、压印、套形及零件的拉伸等工艺动作，可应用于汽车、机床、内燃机、轻纺机械、洗衣机、汽车电器；摩托减震器、空调电器等行业装配的流水线上，与普通液压机相比，YKT型快速液压机具有调节精度高、动作速度快，重复精度稳定、操作安全可靠等优点。

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。