标签
简介:据了解,“十一五”期间,不锈钢碳素钢复合管我国钢铁企业科技投入大幅增加,大中型钢铁企业科技活动投入总额为2865亿元,年均科技活动投入573亿元,与2005年相比,年均增长32.5%。通过科技创新,我国钢铁工业一批关键核心工艺技术取得重大进
English English German German German German Spanish Spanish French French Italian Italian Portuguese Portuguese Japanese Japanese Korean Korean Arabic Arabic Russian Russian IndonesianIndonesian VietnameseVietnamese
m www
<tt date-time="iud"></tt>