From the window of "The 50th China International Medical Equipment Fair", the technique level of medical equipment presently is seen, and the developing tendency of this trade is prospected.
前言： 通过第50届“医博会”这个窗口，我们看到了目前国内医疗器械行业的技术水平，看到了技术上的发展趋势。
Developing tendency and status on magnesium die casting industry in China and international are analyzed.
分析了国际和国内镁合金压铸业的现状和发展趋势；
This paper introduced the present situation and the developing tendency of international leaching technique, deep mining, mine environment protection and treatment, filling technique and ocean mining.
介绍了国际上溶浸技术、深部开采、矿山环保与治理，充填技术和大洋采矿的现状及发展趋势。
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