探讨了几十种基本的多级精馏装置的流程，并从节能的角度研究和分析它们的特点及适用条件。
This paper mainly probes into some basic flows of multistage distillation equipment, studies their features and analyzes applied conditions from the viewpoint of energy saving.
探索性数据分析分离出数据的模式和特点，把它们有力地显示给分析者。
Exploratory data analysis separates pattern and characteristic from data and shows powerfully them to the analyst.
介绍多工序冲压自动生产线的几种形式，分析了它们的特点及应用。
Several types of automatic stamping line with multi - procedure have been introduced with analysis of their features and application.
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