Structural characteristic of 20-hi rolling mill, roll configuration, working concept, the rolling force analysis, derivation and studying results are discussed this paper.

对20辊轧机构造特点、辊系配置、工作原理、轧制压力的分析、推导、计算进行了研究。

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Company Profile Guangdong Hi-Tech Material co., Ltd. The new force is a company engaged in development and production of nano-coating of professional manufacturers.

公司简介广东高科力新材料有限公司是一家从事纳米涂料开发生产的专业厂家。

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Science and technology is the primary productive force. Hi-Tech industries are knowledge and technology-intensive industry.

科学技术是第一生产力，高科技产业是知识和技术密集型产业。

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American hi-tech companies are in London in force to offer advice.

BBC: UK takes on the Internet World