Dongshen - hong kong water supply scheme to channel dongjiang water to flow southward to shenzhen requires to convert one of the tributaries flowing north to dongjiang - the shima river - into an artificial canal by pumping of water from the shima river from its lower course to its upper course 东深供水工程，引东江水南流至深圳市，需将其中一条原本由南向北流入东江的支流石马河变成一条人工运河，河水由下游抽回上游，逆流而上，工程因而相当艰巨。
您当前位置：