... 社会总产值 total product of society 进级换代 upgrading and updating 出产力 productive forces ...
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upgrading and updating of products 产品升级换代
updating and upgrading 升级换代 ; 进级换代 ; 晋级换代 ; 换代
It is the updating and upgrading of tool that we stress in this thesis.
工具的更新、升级引起的变革，成为本文比较分析的重点。
High development of economy, updating and upgrading of technology are increasing the efficiency with constantly changing of living condition. They also bring about the high risk.
经济的迅猛发展，科技的更新换代以及相伴而来的生存环境的不断变化，促进高效率的同时也带来了高风险。
Through updating and upgrading of the CERNET and digitized transformation for the satellite TV network, the transmission terrace has been built in our country.
通过中国教育和科研计算机网的升级提速，以及卫星电视教育网的数字化改造，构建了我国现代远程教育专业平台。
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