长输管道多不采用短节拼装的弯头。
Pipeline many do not use a short section of the elbow assembly.
长输管道输送原油需要加热。
It need to be heated that transport crude oil in the long pipeline.
长输管道的防腐质量直接影响管线的使用寿命。
The anticorrosion quality of long distance pipeline has direct effect on its service life.
本文提出了一种面向长输管道数据采集系统的成本优化模型。
This paper presents a cost optimized model for long transporting pipe.
长输管道建设中，焊接是制约施工速度和施工质量的关键环节。
Welding is the key factor which restrict the construction speed and quality.
长输管道建设中，焊接是制约施工速度和施工质量的关键环节。
Welding is the key factor which restrict the construction speed and quality.
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