Calculation shows that method of minimum residual error is better method to establishment of the discharge drawdown equations, and minicomputer can use simply in calculating process.

计算表明，最小残差法是建立稳定法涌水量经验方程的一种较好方法，计算过程在微机上易于实现。

youdao

In every percolation brewing method (drip, siphon, etc. ) the shape of the spent coffee bed is a significant indicatorof the uniformityof flow during the drawdown.

系每一种渗滤冲煮方法（滴滤、虹吸等）中，用过既咖啡粉床既形状是判断水流既均匀性既一个重要参考物。

youdao

This paper discusses-the theory and method of deriving the single well Q-S(yield and drawdown) curve using coefficient of permeability from testing and other empirical parameters.

本文探讨了利用测试的渗透系数和其它经验参数推求单孔Q—S（出水量与水位下降）曲线的理论和方法。

youdao