Ostryopsis davidiana has the highest water coefficient and the lowest water consumption and low WUE characteristics. 耗水量最少的樹種是虎榛子，其耗水係數最大，對水分的利用效率最低。
The permeability coefficient is the key factor to pumping and injection. 滲透係數大小是抽水和回灌難易程度的決定因素。
In respect of thermal transfixion, the permeability coefficient ratio determines the success or failure of GWHPPRSW. 從熱貫通的角度來說，滲透係數比是同井回灌地下水源熱泵系統工程成敗的關鍵。
