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

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......