It was this that made the organization of irrigation, particularly the building of canals to channel and preserve the water, essential.

正是这点使得灌溉的统筹，特别是建造运河以疏导和保护水，变得至关重要。

youdao

Part three is analyses of essential features of water resource that include natural and economic features, which influence the foundation of water entitlement and irrigation organizational institute.

第三部分，水资源的基本特性。分析了影响农田水利产权制度和灌溉组织制度建立的水资源自然特性和经济特性。

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Soil dynamic parameters are essential in guiding agriculture production, engineering design for soil and water conservation and irrigation works.

土壤水动力学参数对指导农业生产、水利和水保工程设计是必不可少的。

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These are absolutely essential projects like irrigation and sewer systems.

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At the Rice Research Institute in Gilan, I met Mr Rezai, an irrigation engineer who believes it is essential to look at the wider picture if the rice farmers are to sustain production.

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