Essential to progress in plant biotechnology for deliverable applications, patent and patent application data must be t......

Essential to progress in plant biotechnology for deliverable applications, patent and patent application data must be tr......

进入2009年，全球3G发展的产业环境趋好，使3G的发展获得了难得的历史机遇。其中LTE发展在许可证发放和频率分配上明显受到重视，网络商......

摘 要：清末民初，贵州清水江流域保存着较多的土地管业执照和纳粮执照，它们是保障土地所有权和征收赋税的官方文字凭证，是清水江文书中......

<正>As has happened in the history of many technological advances that have led to important products, many of the initi......