This paper studies the status quo of pipeline network programming in the facet of object, principle, content and method of oil and gas pipeline network programming.
从油气管网规划工作的目的、原则、内容和方法几个方面研究了管网规划的现状。
Fully welded ball valve is widely used in natural gas, oil, heat, chemical and thermoelectric pipeline network and other long-distance pipeline fields.
全焊接球阀广泛应用于天然气、石油、供热、化工及热电管网等长输管线领域。
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