以塔里木和大港油田区域土壤腐蚀试验数据为例，论 证了区域腐蚀试验数据整体概率分布符合正态随机函数、其极大值数据符合Gumbel极值函数 .根据分布参数可以计算区内不同腐蚀性土壤比例、可能存在最大土壤腐蚀性和出现的概率 等工程信息.
As the results of study on the data of metallic mate rials collected from Tarim and Da-Gang Oilfields,it was proved that the basic probability distribution of the regional soil corrosion data was correspo nded with normal random function and their maximum data conformed to Gumbel extreme function.According to the distribution parameters,t he ratios of portions of soils with different corrosivities in the area,the poss ible maximum corrosivity of occurrence and their probabilities could be calculat ed as engineering information.
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