canal head meaning in Chinese
渠首
Examples
- Middle reaches canal head foundation is the non - cohesive soil , extremely loose silt sand
中游渠道地基是粘粒极少、极松散的粉细沙层。 - 2 . an optimal decision - making model for water resources scheduling of large - scale scheduling district is set up . it can provide a method to achieve maximum net revenue with a fixed service discharge from canal head and a fixed pumpage of pumping station
建立了大型灌区水资源优化调配决策模型，研究在灌区渠首供水能力和泵站提水能力一定条件下，将灌区水资源如何调配才使得灌区总净收益达到最大值的优化决策问题。 - 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
它包括两个方面：一是当渠首可引水量能满足灌区灌溉用水量时，则不需要提水灌溉；二是当渠首可引水量尚不能满足灌区灌溉用水量时，则需提水灌溉来补充灌溉用水量。 - 2 . builds up decision model for water resource ' s optimal distribution of large irrigation areas in this thesis . this model resolves the optimal decision problem of how to distribute water resource to meet maximal total net profit in irrigation basins , when water supply potential of irrigation areas " canal head and bailing capability of pumping station hold the line
2 、建立了大型灌区水资源优化调度决策模型，研究在灌区渠首供水能力和泵站提水能力一定的条件下，将灌区水资源如何调配才使得灌区总净收益达到最大值的优化决策问题。