<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          We have launched E-mail Alert service,subscribers can receive the latest catalogues free of charge

           
           

          Mechanism and Experiences for Technology Digestion, Absorption and Re-innovation in China's Railway Equipment Manufacturing Industry

          2010-07-28

          By Ma Mingjie, Research Office Director of Department of Techno-Economic Research, DRC

          I. Enhancing the Capacity of China's Railway Equipment Manufacturing Industry

          Since the reform and opening up, the innovation on China's railway equipment manufacturing industry can be divided into four stages.

          1. First stage (from 1980s to 1990s): the manufacturing capacity of enterprises was enhanced through technology introduction

          The manufacturing capacity is meant to transform technological achievements into mass production suited to design requirements, including the progressiveness of the equipment, the technical level, the adaptability and the workmanship of workers, the technological design and management ability, etc. The manufacturing capacity is the prerequisite for improving the technical competence of enterprises and can be enhanced immediately through technology introduction. During 1980s, a large-scale technology introduction was carried out for China's railway industry. However, due to China's then poor technological and industrial conditions (even bolts of the same quality as those of other countries could not be purchased) and its lower management ability, the re-innovation had not been realized successfully. Nonetheless, the import of technologies during this period had further interpreted key technologies for enterprises. A number of talented people cultivated at that time had played a critical role in the import of technologies in 2003. China has ever since gained more say in the negotiations for the import of technologies.

          2. Second stage (from 1990s to the beginning of the 21st century): the capability of enterprises to absorb and integrate technologies was stepped up

          During this period, by intensifying R&D, the Chinese enterprises substantially improved their ability to absorb and integrate technologies. The ability of the railway equipment manufacturers to integrate technologies is mainly manifested in three aspects. Firstly, the ability to master key technologies. Secondly, the ability to formulate norms and standards for the utilization of technologies. Thirdly, the ability to design the systems, namely, the ability to properly handle the relationships and functions between main engines and the components.

          The long-term technical accumulation has brought forth a technological foundation and a contingent of trained personnel for business innovation. For example, CSR Sifang Locomotive & Rolling Stock Co. Ltd. has accumulated technologies for bogie designing and manufacturing. The Chinese locomotive manufacturing enterprises think that their own strengths are the basis for the success in technology introduction, digestion, absorption and re-innovation and that the rail speed acceleration conducted for 5 times before 2003 had played a positive role in improving their strength. Although only the technology for manufacturing passenger trains of 160 km/h or lower was achieved, the relatively complete equipment manufacturing system was formed, which laid a foundation for future technology digestion, absorption and re-innovation ("Made in China: The Only Way to Modernization of China's Railway Technology and Equipment", Integrative Transportation, August, 2007).

          Despite the considerable amelioration of the absorption capacity of the enterprises during this period, their technical level remained low and a prodigious amount of key technologies had yet not been achieved. For example, since 1980s, CNR Changchun Railway Vehicle Co. Ltd. had imported quite a number of advanced technologies from Britain, South Korea and Canada for the making of passenger trains, but had not gained the key technology for the making of CRH Electric Multiple Unit of 200km/h. There was still some gap between China and the developed countries in terms of the safety and dependability of bogie, converting and traction techniques and braking system, thus making it difficult to further conduct the rail speed acceleration.

          3. Third stage (from 2003 till now): digestion, absorption and re-innovation characterized by integration innovation

          This period was mainly marked by the grasp of part of the core technologies by the enterprises. The re-innovation made by Chinese enterprises was manifested in two ways.

          Firstly, the imported technologies were transformed to adapt to China's national conditions on the basis of digestion and absorption. For example, the designing of the Electric Multiple Unit was carried out jointly with the foreign partners at the very beginning of the technology introduction to suit the product better to China's national conditions. When importing the high-speed technology from Alsthom Transport, CNR Changchun Railway Vehicle Co. Ltd. (hereinafter referred to as “Changchun RV”) revamped the original wagon considerably.

          Secondly, technologies were upgraded on the basis of the technology introduction. By high-speed train technology, the re-innovation was reflected by the technological upgrading of accelerating the speed from 200 km/h to 300~350 km/h in 2007. Before, transnational corporations possessing the high-speed technology of 300 km/h and above had been Alsthom Transport, Siemens, Bombardier and Kawasaki Heavy Industries Group. By innovation manner, unlike the foreign-dominated design when technologies were imported, the re-innovation featuring technological upgrading was mainly designed by Chinese enterprises, with foreign partners providing technical support. CSR Sifang Locomotive & Rolling Stock Co. Ltd. developed high-speed trains of 300~350 km/h and above and 16 electric multiple units, marking the moment when Chinese enterprises have gained the ability to independently design and manufacture high-speed trains of 300~350 km/h.

          The above-mentioned technology introduction has set up 3 platforms for independent innovation to be conducted by Chinese enterprises in the future. The first is the manufacturing platform, namely, the self-sustaining standard system for high-speed trains suited to China's national conditions. By taking the import, digestion and absorption of 9 key technologies as the leading factor, the industrial chain of R & D, designing and manufacturing of high-speed trains can come into being under the system. The second is the platform of digestion and absorption, on which a complete set of China's own testing and accepting system can be set up, including the transformation of technical drawings and tooling of fabrication technologies. The third is the platform of re-innovation, on which products and technologies can be re-innovated.

          In general, at present the Chinese enterprises have mastered the international advanced manufacturing technologies and have gained the integration ability.

          Stages and Features of the Enhancement of the Capacity of China's Railway Equipment Manufacturing Industry

          Mechanism and Experiences for Technology Digestion, Absorption and Re-innovation in China's Railway Equipment Manufacturing Industry

          First Stage

          Second Stage

          Third Stage

          Fourth Stage

          Technology Source

          Technology introduction

          Technology introduction

          Technology introduction

          Endogeny

          Technical Competence

          Manufacturing Capacity

          Absorption Ability

          Absorption Ability

          Innovation Ability

          Innovation Model

          Block Innovation Simulating Innovation

          Block Innovation Simulating Innovation

          Open Innovation Simulating Innovation Integration Innovation

          Open Innovation Original Innovation Integration Innovation

          Knowledge transferred

          Explicit Knowledge

          Explicit Knowledge

          Implicit Knowledge

          Implicit Knowledge

          4. Fourth stage (medium- and long-term objective): Chinese enterprises have gained the independent innovation ability to research and develop key technologies

          Enhancing the production capacity and the absorption ability is far from bringing about the technology catching-up, which can eventually be realized by enhancing the innovation ability. Realizing the independent innovation by mastering all or major core technologies is the medium- and long-term objective for China's railway equipment manufacturing industry. The enterprises know much about it, thinking that the integration ability is not the ultimate goal of independent innovation and that the innovation input cannot be reduced just because the integration ability is achieved.

          If you need the full text, please leave a message on the website.

           
          主站蜘蛛池模板: 精品无码久久久久国产电影| 九色精品国产亚洲av麻豆一 | 又湿又紧又大又爽a视频| 亚洲AV优女天堂波多野结衣| 精品人妻伦一二三区久久| 99久久激情国产精品| 在线中文字幕亚洲日韩2020| 亚洲女人天堂| 国产中文三级全黄| 无码天堂亚洲国产AV| 97久久综合区小说区图片区| 国产成人精品无码专区| 国产一区精品在线免费看| 久久精品国产久精国产69| 亚洲春色在线视频| 狠狠色噜噜狠狠狠777米奇| 第一页亚洲| 日韩秘 无码一区二区三区| 免费人成年激情视频在线观看| 亚洲男人电影天堂无码| 麻豆一区二区三区精品蜜桃| 日韩精品中文字幕亚洲| 九九热视频在线免费观看| 五月一区二区久久综合天堂| 成人国产乱对白在线观看| 少妇夜夜春夜夜爽试看视频| 亚洲香蕉在线| 欧美国产综合欧美视频| 久久91精品国产一区二区| 亚洲精品日韩久久精品| 97精品依人久久久大香线蕉97| 开心久久综合激情五月天| 国产69堂免费视频| 久99久热这里只有精品| 国产激情无码一区二区三区| 男女性高爱潮免费网站| 久久91精品牛牛| 综合色在线| 久久综合给合久久狠狠狠| 老司机性色福利精品视频| 色综合色国产热无码一|