常见例句双语例句Based on Boussinesq's Approximation, the introduction of porosity factor, and k -εturbulent model, the closure of turbulent equations is realized.利用布辛涅斯克小密度差近似，引入空度因子，采用双方程模型，对紊流方程组进行封闭。 返回 Boussinesq equation