In petrochemical production, such methods as air compressing, pump circulation, mechanical blending and pipeline mixing are usually used in product mixing.
石油化工生产中常用的油品调合方法有压缩空气、泵循环、机械搅拌和管道调合。
The aggregate supply control over petrochemical industry has been basically achieved and the demand and supply of crude oil, product oil and main petrochemical products are balanced on the whole.
石化行业控制总量基本到位，全年原油、成品油和主要化工产品的供需大体平衡。
From the view of national petrochemical industrial, the capacity, product quality, total staff, sale income of subsidiary of the chemical plate of Northern petroleum group lie at mid level.
从全国石化行业来看，北方石油集团化工板块下属企业在产能、产品质量、员工总数、销售收入等方面，均处于中游水平。
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