近年来,随着海洋经济迅速发展,我国深海石油和天然气的探测与采集日益活跃,海底管道作为连接海洋和陆地的运输通道得到了广泛应用.然而,海水中含盐量高,包含多种强电解质.许多海底管道的管件连接件或焊接接头缺陷处存在狭窄的缝隙,海水渗入之后,缝隙内极易发生缝隙腐蚀,危害管道安全运行,造成巨大的经济损失.因此,研究海底...
One major source of change in the field of health care is in the treatment of diabetes, which is consuming an increasingly large portion of national health care expenditures and effort. Diabetes is, in many ways, a large part of the future of medicine in the United States and in many ...