first time step meaning in English
起步
Examples
- The rule about water flow in the unsaturated soil and the soil - water characteristic curve are described in this thesis in the first time step during the numerical simulation , the permeability coefficient is calculated according to the initial water content of the unsaturated soil , because of as shown in the soil - water characteristic curve has the hysteresis phenomenon
阐述了非饱和土中水流动的基本规律和土水特征曲线。由于土水特征曲线具有滞后的特点，提出了根据初始含水量来确定数值模拟初始时步非饱和土的渗透系数。