海水对金属的腐蚀破坏作用是十分严重的,特別是异种金属的接触,在海水中形成宏观电池更加剧电负性较大的金属腐蚀。有关海洋设施,由于选材设计不合理,或由于使用不当往往造成异种金属接触或其它方面的腐蚀问题。本文讨论的进口1825型浮球和1090 D型声学释放器就是上述情况兼而有之的一例。 Seawater damage to metal corrosion is very serious, especially the contact of dissimilar metals, the formation of macroscopic batteries in the sea more drastic electrocracking of metal corrosion. Concerning oceanic facilities, problems with dissimilar metal contact or other causes of corrosion are often caused by improper material design or improper use. This article discusses the import of 1825 Float and 1090 D-type acoustic release device is a combination of the above two cases.