同一口井中处于相同腐蚀环境下井下油管各部位的腐蚀差异较大，这是由于环境因素造成的。
Great differences were found out at different parts of downhole tubing under the same corrosion conditions, which are resulted from the environmental factors.
同一口井中处于相同腐蚀环境下井下油管各部位的腐蚀差异较大，这是由于环境因素造成的。
Great differences were found out at different parts of downhole tubing under the same corrosion conditions, which are resulted from the environmental factors.
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