工艺技术

This invention discloses a new technology for preparing rear earth ionic doped fiber prefabricated rods with DC-RTA technology in a sol-gel method including preparing sol containing necessary doped ions, coating said sol uniformly on the inner wall of the quartz glass tube and burning it under high temperature to coagulate and vitrify them to a doped layer and repeating the above process to form a fiber prefabricated rod by oxygen and hydrogen flame after the doped layer reaches to a designed thickness and the fiber prefabricated rod can be made to various rare earth ionic doped fibers by an ordinary drawbench technology.

本发明属于光纤制造和光纤激光技术领域，具体公开了一种利用溶胶凝胶方法中的DC-RTA技术制备稀土离子掺杂光纤预制棒的新工艺。该工艺步骤包括预先配制好含有所需掺杂离子的溶胶，将该溶胶均匀涂覆在石英玻璃管的内壁后高温灼烧，使之凝结并玻璃化为一层掺杂层。反复上述涂覆灼烧过程，在掺杂层达到设计厚度后由氢氧焰高温收棒形成光纤预制棒。该方法所得到的光纤预制棒可以通过普通拉丝工艺拉制成各类稀土离子掺杂光纤。

In order to verify safety,efficiency and high quality of high-speed cutting machining,I d like to analyze the whole manufacturing process;from drawing up the steps of mould machining;taking rough machining,semi-finish machining and finish machining into account,and designing a reasonable machining scheme through emulation mode to meet the demand of high-speed cutting machining.

为了验证高速切削技术的安全、高效和高质量特性，从一个高速铣削加工任务开始，分析了高速加工模具工艺制订步骤，把粗加工、半精加工和精加工作为一个整体考虑，设计出合理的加工方案，通过仿真达到高速切削技术的要求，并通过实际加工，得出与传统工艺电火花线切割加工对比后的试验数据，论证了高速切削工艺的高效和经济性。

It is pointed out that the immersible pump-based fuelling process can realize the multi oil gun on the one pump basis under the condition of positive pressure , which makes the design of fuelling station more flexible and is a development tendency in moder

指出采用自吸泵型加油机的加油工艺存在弊端，而采用潜油泵加油机的加油工艺，可以实现一泵多枪，油罐正压出油，技术先进，工艺简单，使加油站设计更加灵活，是现代化新型加油站的技术发展趋势。

The industrial manufacturing technique, the trend of development of neohexene ,and the characteristics of these production technique were reviewed and analyzed in the paper, particularlyabout the selective dimerization of isobutylene and metathesis of βdiisobutylene with ethylene were introduced.

对新己烯生产技术的现状和今后的发展趋势进行了综述，分析了由异丁烯和乙烯生产新己烯的技术特征，讨论了烯烃二聚工艺和催化剂、烯烃复分解工艺及相应的催化剂，指出了各种工艺的优势和不足。

Prepress production has been mostly digitalized because of the invention and developing of typesetter technology, computer to plate technic has digitalized platemaking process too, the appearance of digital press makes digitalization possible in printing process. For their characteristics, the traditional control strip can't be used in digital platemaking and printing, therefore, we should design PostScript printing control strip as a way to control quality during production.

激光照排技术的发明和发展使印前工艺过程已经基本实现了数字化，CTP技术又将制版工艺带入数字时代，数字印刷机的出现为印刷工艺进入数字化提供了可能，由于它们的作业特点，用于传统印刷的控制条无法作为其制版、印刷质量检验与控制的手段，这就需要我们设计出既能控制印刷过程又能控制制版质量的PostScript印刷控制条。

The technological advances of toluene disproportionation and transalkylation process,shape selective disproportionation of tolueneand dealkylation process of heavy aromatics, domestic and abroad, were reviewed.

综述了国内外芳烃联合装置中甲苯歧化与烷基转移工艺、甲苯择形歧化工艺和重芳烃脱烷基工艺近年来技术进展情况，并分析了各种技术的优势与不足之处。

This paper studied two new processes for catalytic synthesis of decabromodiphenyl ether which were carried out distinguishingly by brominating diphenyl oxide with bromine and bromine chloride in the presence of a novel metal catalyst.

本文研究了采用新型金属型催化剂催化合成十溴二苯醚的溴素法和氯化溴法两种新工艺；利用均匀实验设计和单纯形优化试验技术对两种新工艺的工艺条件进行了优化研究，分别确定了两种工艺路线的最佳工艺条件；通过筛选，确定了一种十溴二苯醚的精制新工艺。

And then, this article makes full illustration of the RP technology and study on intomb messages describing, fault-tolerance dicing, the Laminated Object Manufacturing which is applied greatly according to the characteristics of CAS development. On the base of author's own scientific research work, this article gives a typical developing mode for new motorcycle products, discusses the trend towards integration of RP technology and the application of the RE/RP-based Rapid Mould Manufacture, especially the cooperative mechanism of infuse plastic product rapid manufacture and the development trend of RT technology as well as the developing policy to that.

根据CAS产品开发的特点，对RP技术作了全面的论述，研究了RP制造中实体信息描述与容错切片，对应用范围较广的叠层实体制造工艺的工艺过程作了详细的研究，并结合作者的科研工作，提出了一种典型的摩托车新品的开发模式，讨论了RP技术的集成化发展趋势和基于RE／RP技术的快速模具制造技术的应用特别是注塑产品快速制造的协同机制。

With new analysis methods used in the comparative study of ancient mural techniques, in this chapter, some unique materials and techniques for ancient murals were discovered for the first time, such as the use of natural lac dye. This demonstrated the influence of Indian materials and techniques on Chinese ancient mural techniques, as recorded in Chinese document Yingzaofashi.

本章在古代壁画制作技术的比较研究中应用了新的分析技术，首次发现了一些用于古代壁画制作的独特材料和工艺，如使用天然虫胶染料，证明了印度材料和工艺对中国古代壁画技术的影响，这些影响在记录我国古代技术的《营造法式》一书中得到印证。

The project for passenger cars with engine piston aluminum alloy, alloy components through optimal design, rare earth - Modification of phosphorus salt air and bottom melting slabs, metal-cast aluminum piston at the end of riser feeding process, heat treatment process parameters of choice , Nano-Detroit surface coating materials, such as key technology research and development with a density of small, light weight, thermal conductivity, and coefficient of thermal expansion of small, high temperature and have sufficient strength, wear and corrosion resistance , Aluminum piston size and good stability, its integrated technical indicators have reached the leading domestic level.

项目介绍（简介、技术特点、应用范围、市场前景、效益分析及对投资者要求。500字以内）本项目针对乘用车发动机用铝合金活塞，通过合金成分优化设计、稀土－磷盐复合变质处理与炉底透气砖熔炼技术、铝活塞金属型铸造底冒口补缩工艺、热处理工艺参数的选择、纳米级活塞表面涂层材料等关键技术的研究，开发出具有密度小、质量轻、热传导性好、热膨胀系数小，并具有足够的高温强度、耐磨和耐蚀性能、尺寸稳定性好的铝合金活塞，其综合技术指标达到国内领先水平。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。