This paper analyzes the main causes of corrosion on boilers' gas pipelines, puts forth the measure of teflon-steel coated thermoplastic inner-cased pipe, which was implemented.
分析了造成锅炉煤气管道系统腐蚀的主要原因，提出并实施了采用聚四氟乙烯钢覆热滚塑内衬管道的解决办法。
The effects of casing diameter on acoustic log in cased-borehole at free pipe situation are investigated with finite element method (FEM).
用有限元方法研究了自由套管井中不同直径的套管对声波测井的影响。
The effects of casing diameter on acoustic log in cased-borehole at free pipe situation are investigated with finite element method (FEM).
用有限元方法研究了自由套管井中不同直径的套管对声波测井的影响。
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