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</div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"> 美国页岩气开发改变能源格局<BR><BR> 一场能源供应领域的变革正在美国上演：页岩气将取代煤炭成为仅次于石油的美国第二大能源资源，而页岩气产量的增加，拉低了能源价格，已成为美国振兴制造业的一大法宝。并且，美国将在2015年超越俄罗斯成为全球最大天然气生产国，这对一直寻求能源独立的美国来说，已是一场实实在在的“能源革命”。<BR><BR> 美国对页岩气的开采，在10年前还微不足道，但现在其已占该国天然气开采总量的约四分之一。据称到2035年这一比例将提高到约50％。尽管目前页岩气开发尚不能完全摆脱环境污染隐忧、与人争水等难题，但《时代》周刊、《华盛顿邮报》《朝日新闻》等媒体的评论认为，美国的页岩气成功开发极有可能成为全球页岩油气开发的“引擎”，驱动能源产业出现一场革命，进而对全球地缘政治格局产生重要影响。<BR><BR> 一周之“首”<BR><BR> 首次研制成功单<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>半加器<BR><BR> 研究人员一直在努力降低硅基计算组件的尺度。而在一项新研究中，韩国、日本和英国科学家组成的科研小组仅用5个<a href="http://material.oecr.com" target="_blank" class="relatedlink">晶体</a>管就制造出一个半加器，它是所有逻辑<a href="http://electronic.oecr.com" target="_blank" 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