Metal powder materials have great significance to promote the nonferrous metals industry and chemical industry to upgrade its technology and promote the optimization of the industrial structure.
金属粉体材料对促进有色行业和精细化工行业技术升级，推动优化产业结构具有重要意义。
This paper aims to study optimization of export commodity structure and upgrade of industrial structure in Heibei province under the WTO.
本文是在加入WTO的大背景下，以优化河北省出口商品结构和提升产业结构为主要研究目的。
Study on Optimization and Upgrade of Regional Industrial Structure with Environment Constraints;
优化区域农业生产结构对于提高农民收入具有重要的现实意义。
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