另外压载水舱内部结构复杂，“屏蔽效应”对保护电流分布的影响也成为阴极保护设计中的关键问题。
In addition, inside structure of ballast water tank is very complex, shield effect to protective current also becomes a key problem in cathodic protection design.
性能优良、制造简便的铜屏蔽结构技术已被成功地移植到我国首创的双水内冷300 MW发电机上。
In China, the copper shield structuring technology characterized by good performance and simple manufacture can now be successfully applied to the double water cooled 300 MW generators.
利用水射流的屏蔽作用，消除水对电弧和焊缝的不利影响，是提高水下湿法焊缝质量的一种有效方法。
The underwater welding using a water jet curtain to prevent the damaging effect of water on arc and weld is a practical way to im- prove the"wet"weld quality.
应用推荐