canal lift 中文意思是什麼
canal lift
解釋
運河升船機-
Two aspects of the problem are discussed : one is that lift irrigation is no need when abstraction volume capability of canal head can meet the demand ; the other is that lift irrigation is in need when abstraction volume capability of canal head can not meet the demand
它包括兩個方面:一是當渠首可引水量能滿足灌區灌溉用水量時,則不需要提水灌溉;二是當渠首可引水量尚不能滿足灌區灌溉用水量時,則需提水灌溉來補充灌溉用水量。
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