本文讨论了直接加热器在糖厂使用对糖厂热力经济的影响，介绍了直接加热过程蒸汽消耗的数量分析方法和计算公式。
In this paper the effect of using direct heater on heat economy of sugar factories is discussed, also the quantity analysis method and calculation equations for vapor consumption are introduced.
通过以上的数量分析，本文得到了如下主要结论：第一，造成我国经济波动的主要因素是技术进步和制度变化。
The following main conclusions could be drawn from the quantitative analysis: First, technology advances and institutional changes were the main drivers of China's business fluctuations.
通过以上的数量分析，本文得到了如下主要结论：第一，造成我国经济波动的主要因素是技术进步和制度变化。
The following main conclusions could be drawn from the quantitative analysis: First, technology advances and institutional changes were the main drivers of China's business fluctuations.
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