但是在氢脆发生前注汽管线首先产生了不均匀的局部腐蚀，氢脆伴生于局部腐蚀产生的。
But before hydrogen corrosion occurred, steam-injecting pipes produced unevenly distributed partial corrosion, and hydrogen corrosion was associated with partial corrosion.
模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响，考虑了变注入工况和注汽管偏心结构对热损失的影响。
The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.
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