George Nelson was America’s most wanted man—a gangster so bloodthirsty， Al Capone booted him out of his gang for being ......

我们生活的世界充满了各种复杂和不安分的因素,它为激发冒险家的斗志和潜能提供了无限机会,创造源源不断的财富和奇迹;它也暗自分......

为了确保油气长输管道的安全运行,针对管道上盗油孔的检测问题,研究了盗油孔处剩磁检测信号的变化特征.采用磁畴模型对盗油孔漏磁......