In Xingang steel company, using imported manganese ore has been a important technology to improve preparation concentrate level, products' quality and optimize charging 'ingredients and structure.

使用进口锰矿已成为新钢公司提高精料水平和产品质量、优化炉料结构的一项重要技术措施。

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Objective: Platelet-rich concentrate (PRC) is an autologous growth factor preparation that is in routine use for orthopaedic and maxillofacial surgery.

目的：血小板富集浓缩（PRC）是矫形外科和颌面外科领域用来准备自体移植生长因子的常用方法。

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To concentrate in class and listen more efforts should be made before the exam preparation.

上课时要集中精力听讲，考试前更应该努力准备。

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"I don't think I need a rest but it will help my individual preparation that I can concentrate a little bit more on the five-day stuff rather than Twenty20, " he added.

BBC: Strauss seeks new coach decision

The Australian's team-mate Sebastian Vettel ended the session 16th fastest, sandwiched between the Ferraris of Bahrain winner Fernando Alonso and Felipe Massa as all three appeared to concentrate on race preparation with heavy fuel loads.

BBC: Lewis Hamilton fastest in Friday Australian GP practice

Nathan Bracken, Brett Lee and Andrew Symonds will miss the first three weeks because of the ODI series against Pakistan, while Australian skipper Ricky Ponting, Michael Hussey and Mitchell Johnson have opted out entirely, preferring to concentrate on Ashes preparation.

BBC: IPL action begins in South Africa