探讨领域本体的描述方法，归纳了领域本体空间上的推理公式。加强了领域本体的推理能力。
It puts forward a method to describe domain ontology, sums up the formula on the domain ontology space.
与前几个版本相比，其重点是经济背后的推理公式，同时引导学生的数学，这将使他们能够谋求进一步阅读。
As with previous editions, the emphasis is on the economic reasoning behind the formulae while introducing students to the mathematics that will enable them to pursue further reading.
应用广东推理公式法和单位线计算广州抽水蓄能电站水库坝址处设计洪水，并对两方法计算的结果进行分析比较。
The rational formula method and the unit hydrograph method are used and compared in the calculation of the design flood for the Guangzhou pumped storage station in this paper.
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