通过热值计算法，求出了使用丙烷的理论节约率。
By calorific value calculated method, we can find out theoretical economic ratio of making use of propane gas.
采用理论推导和热值计算法，可求出使用丙烷气的理论节约率。
By theoretical inference and calorific value calculation method, theoretical economic ratio of making use of propane gas is found out.
文摘：采用理论推导和热值计算法，可求出使用丙烷气的理论节约率。
Abstract: By theoretical inference and calorific value calculation method, theoretical economic ratio of making use of propane gas is found out.
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