operation line

• 操作线

operation line的用法和样例：

例句

1. A new method is proposed for analysis of oxygen-enrichment and pulverized coal injection using Rist operating line,which will be helpful to improve the injection operation.
   首先提出了一种适宜于分析富氧喷煤工艺的高温区热平衡计算法，然后又将其引入到操作线中，最后结合实例运用操作线分析了富氧喷煤后焦比的变化及其置换比。