corrosion

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corrosion

1.Protection methods against the metal corrosion include（）2.Metal corrosion can be calssified according to the two major processes by which it occurs.One is（）直接氧化corrosion，the second proce3.Stress corrosion cracking (SCC) results from the combined action of an applied tensile stress and a corrosive environment4.Some general corrosion protection techniques include material selection,（）,（）, and（）5.In corrosion process, the total rate of oxidation must equal the total rate of reduction.