又简介根据达西定律和水均衡原理，建立了三维有限差分数值方程及其解法。
It is briefly introduced that three-dimensional finite difference numerical equation is built according to Darcy's law and water equilibrium principle.
根据达西定律设计了沥青岩输送特性实验系统，该系统利用压降法测量沥青岩的初始粘结温度。
The system measures pressure drop through the material column to determine the onset temperature for the sintering of bituminous rock.
根据达拉冯的说法，到2020年，老挝来自水电站和矿业的GDP将由现今的4%增长到20%。
According to Viravong, 20% of Laos' GDP will come from hydropower and mining by 2020, up from about 4% today.
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