The cathodic protection effect was evaluated by adopting close interval measuring techniques to measure and analyze the cathodic protection status in gas gathering pipeline system.
采用密间隔电位测量技术对集气干线系统的阴极保护状况进行测量与分析，评价阴极保护效果。
It can be concluded that the interval in pass during finish rolling is an important reason to affect the mechanical properties of X70 pipeline steel.
经研究认为，精轧过程中的道次间隔时间是造成力学性能差异的主要原因。
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