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The paint system on any boat is an important first barrier against corrosion.
任何船只上的涂料体系都是抗蚀的第一道屏障。
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The process of barrier closing has the Open First function;
关闸过程具备开优先功能；
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The process of barrier closing has the Open First function;
关闸过程具备开优先功能；
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