采用能流结构图直观地分析了甲苯吸收乙烯分离工艺，揭示了系统火用损失发生的主要部位和原因，说明了系统的节能效果。
The main locations and reasons of exergy loss are illustrated by energy-flow framework diagram. The effects of energy conservation is discussed.
本文利用系统分析方法，提出了进行城市燃气系统气源结构、规模及能流优化配置的定量分析方法。
On use of system analysis method, the paper puts forward a quantitative analysis method to optimize gas resources constitution, capacity and energy flow for town gas system.
论文以湿地系统中的能量流动为主线，绘制出寿光市湿地系统的能流模型图，进而分析了湿地的营养结构特征。
As the energy flowage a masterstroke, the paper protracted the energy flowing mode of wetland ecology in Shouguang City, and analyzed its nutrition structure character.
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