[涂装·防腐] 请教“牺牲阳极”

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allan-gao

发表于 2009-7-20 15:06 | 显示全部楼层 |阅读模式来自：中国北京

请问下面的句子怎么翻译，谢谢！

three alloyed copper anodes to prevent marine fouling supplied complete with cofferdam comprising flange and strainer cover penetration unit. with 5m tail tabel.

什么是"cofferdam coomprising flange and strainer cover penetration unit.

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