open nullah 中文意思是什麼
open nullah
解釋
大明渠-
Once the water reaches its maximum speed, the valve slams shut and pressure is built up in the pump. this pressure forces open a second valve linked to the delivery pipe. when nullah water falls past the hydraulic ram, its momentum will lift a tenth of the water to a storage tank located near the esther li building photo 2
泵內有活門，當溪水在流動中受阻，會產生比正常壓力高十倍以上的瞬時水錘壓力，此時，泵內的另一活門會打開，把十分之一的溪水抽往設于李慧珍附近的儲水缸備用（圖二） 。
分享友人