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。
2
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。
3
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.