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报刊名称：焊接技术 中华人民共和国期刊报纸出版 许可证编号： 津期出证字第1070号 主办单位：天津市焊接研究所、中国工程建设焊接协会 编辑单位：天津市焊接研究所《焊接技术》编辑部 中国标准刊号：ISSN 1002-025
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    美国高速公路安全管理局上周表示，由于车辆悬架系统存在故障，日产汽车目前正按要求在美国市场召回41649辆SUV和皮卡车型，这批车型有望在下月起进行免费维修。
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四种国外发动机的对比 超7当初的设计考虑就是为了弥补歼7的不足，满足巴基斯坦对先进战斗机的需要。为了适应这一需要，美英发动机生产商也拿出了各自的方案。但对于“佩刀”Ⅱ及后来由歼7的机头进气改用两侧 ...]]> 2008-01-07 08:50:50 http://www.weldr.com/article/2008/0107/article_11156.html 中国焊接资源网 http://www.weldr.com/ http://www.weldr.com/article/2007/1225/article_11141.html 2007-12-25 08:50:33 http://www.weldr.com/article/2007/1225/article_11141.html 中国焊接资源网 http://www.weldr.com/ http://www.weldr.com/article/2007/1225/article_11140.html 2007-12-25 08:49:57 http://www.weldr.com/article/2007/1225/article_11140.html 中国焊接资源网 http://www.weldr.com/ http://www.weldr.com/article/2007/1224/article_11139.html 2007-12-24 15:14:28 http://www.weldr.com/article/2007/1224/article_11139.html 中国焊接资源网 http://www.weldr.com/ http://www.weldr.com/article/2007/1224/article_11138.html 2007-12-24 15:13:59 http://www.weldr.com/article/2007/1224/article_11138.html 中国焊接资源网 http://www.weldr.com/ http://www.weldr.com/article/2007/1224/article_11137.html 2007-12-24 15:12:57 http://www.weldr.com/article/2007/1224/article_11137.html 中国焊接资源网 http://www.weldr.com/