今天的网络数字技术推进着信息传播的两个发展趋向。
Today's Internet digital technology is propelling information communication to develop in two ways.
前言： 薄板坯连铸连轧工艺有两个发展趋向：超薄带钢生产线和多品种生产线。
Thin slab casting and rolling technology has been developing toward two directions: ultra-thin strip production and multiple steel grades production.
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