加工方法

May 6 went to the world famous diamond factories Buddha Hill visits by professionals for your excellent diamond-cutting on technology, process and identification processing burnish classification methods, and more specifically for the romantic honeymoon trip arrangements draw, One lucky will be provided by the exquisite Buddha Hill diamond a diamond factory.

5月6日上午前往世界著名的迦山钻石工厂参观，由专业人员为您讲解卓越的钻石切割技术，加工打磨过程和鉴定分级方法，更有特别为此次浪漫蜜月之旅安排的抽奖活动，将有一位幸运儿得到由迦山钻石厂提供的精美钻石一颗。

To Oct. Leaders and teachers from AQSIQ, MOFCOM, Ministry of Foreign Affair and Party School of Guangdong CCP committee will be invited. Professional experts, scholars with good English communicative skills will teach at the workshop. There will be 14 lectures including: Fundamental Realities of China, Commerce in China, China's Reform and Opening, Chinese Foreign Relations, Decision Mechanism, Administration Capacity Building, Cost Control, Kimberley Process Certification Scheme Requirements in Detail, Entry-Exit Surveillance and Risk Assessment, Internal Surveillance and Work Guide System Building, The Application of Network Administration System in Kimberley Process, Kimberley Process Certification Scheme Operational Management Website Practice, Rough Diamond Trade and Processing Control Practice, Rough Diamond Inspection Technology; 3 on-site practice courses include: Port Administration Practice, Computer Operating System, Commonly Used Office Software and Internet Practice, and Rough Diamond Inspection Practice; 3 on-site investigation tours include: Business in Cosmopolitan City Guangzhou, Diamond Import-Export and Processing Enterprises Supervision, and Trade Supervision at Shanghai Diamond Exchange.

本次研修班的主要内容如下：研修班共安排十四项专题讲座，讲座题目分别是中国的基本国情、中国的商务工作、中国的改革开放、中国的对外关系、决策机制、执政能力建设、成本控制、金伯利进程证书制度要求详述、进出口监管与风险评估、内部监控及工作导则体系建设、网络管理系统在金伯利进程工作中的应用、金伯利进程证书制度业务管理网站实务、毛坯钻石贸易及加工监管实务和毛坯钻石查验技术方法，将邀请国家质检总局、商务部、外交部的领导以及广东省委党校的老师，同时选派和聘请多名专业水平高，具备外语沟通能力的专家、学者为学员授课。

Based on a large number of references,data and documents,a comprehensive comment is made on the present situation and the development of the technology of precision grinding and polishing die and mould with free-form surfaces by robot,and this paper presents key technology of grinding and polishing die and mould with free-form surfaces by robot,which includes the movement programming method for grinding and polishing tool and the method of grinding and polishing tool path generation.

在阅读和消化大量国内外文献资料的基础上，本文对模具自由曲面的机器人自动精加工技术做了较为全面的综合评述，重点介绍了机器人自动打磨和抛光精加工模具自由曲面的关键技术—加工工具的轨迹规划方法和轨迹生成算法。

Finally, several sets of cast dies and molds, including V6 transfer mold emplyed by GM, shoe die and piston die used for Santana, have been casted by LS high precise die-making system. All of these dies only needed a little machinaity. The cost and manufacture period of cast dies are lower than those of traditional wrought dies.

最后，采用LS法精密模具制造技术，用铸铁和新开发的铸造模具钢MCH13钢浇铸了多副模具，如V6发动机曲轴模、鞋模、桑塔纳轿车用活塞模具等，这些模具仅需进行少量的机加工即可进行使用，其生产成本及制作周期大大低于同类传统方法制造的模具。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外，作者还分析了一台加工中心上的钻头刃磨装置，提出了一种两轴合成四平面钻尖的刃磨理论，并对其应用前景进行了初步探讨，为钻头刃磨方法和刃磨机的研制开辟了一条新的途径。

The concentrated district of root distribution at horizontal level gradually reduced from the dripping point with ascending soil moisture.

通过滴灌自动控制根区水分，用根钻法结合DT-SCAN图像分析技术来研究大田加工番茄根系分布规律是一种可靠的方法。

As a most essential driving part, gear is widely used in all kinds of machines in many important industrial fields.

齿轮是各类机械中应用极为广泛的重要传动零件，采用以净形或近净形为目标的精密锻造成形工艺生产齿轮件，适应高效、精密、绿色清洁的21世纪先进制造技术的发展趋势，成为未来齿轮加工变革的主要方法之一。

In this paper, a theoretic equation on the grinding of drum-shaped equal-pressure rubber roller gained by reverse derive method was introduced.

本文介绍一个用逆推法得到的鼓形等压力橡胶辊磨削加工曲线的理论方法。

In this paper an innovative method for machining sculptured surfaces is presented. By using a disc cutter with a concave end instead of traditional ball-ended or drum-shaped tools, and adjusting the cut- ted axis to swing relative to the component being machined under some special rules, the envelope formed by the trace of the tool-nose may have the same derivative up to the third order as the required theoretical surface.

本文提出了一种加工自由曲面的新方法，即采用中凹的盘形铣刀取代传统的球头或鼓形铣刀，在每一行程中让刀具轴线相对于工件按特定的规律摆动，使得在垂直于进给方向的法截面中，由刀尖轨迹形成的包络面与理论曲面的法截线具有相同的1～3阶导数，从而在保持精度不变的前提下，使实际行程次数得以大幅度的减少。

A new form generation method for ultra-precision axisymmetric aspheric mirrors is introduced.

介绍了轴对称光学非球面镜超精密加工的新方法。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。