By statistically analysing those accidents of gastrunk line at Sichuan OaS Field, the paper concludes that the internal corrosion is the main reason in pipeline accidents.
本文通过对四川气田输气干线事故的统计分析，说明了内腐蚀是管道事故发生的主要原因。
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Known to some as the Elephant's Trunk Nebula, parts of the glowing gas and dust clouds of this star formation region may appear to take on foreboding forms, some nearly human.