Water delivery and injection line: cleanup scale and sediment.

输水、注水管线：清除水垢、沉积物。

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The contributions of ephemeral gully erosion development in different stages to sediment delivery were analyzed.

分析了浅沟发育不同阶段浅沟侵蚀对坡面侵蚀产沙的贡献。

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In different land use systems, the relation among rainfall amount, rainfall intensity and runoff, sediment delivery is different. But they all reached 5% significance level.

不同土地利用方式下，降雨量和降雨强度与系统径流量和含沙量的相关性都达到5%显著性水平。

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In this model framework, existing ecological and biogeochemistry concepts are extended with a balanced approach for assessing nutrient and sediment delivery on the one hand, and nutrient in-stream retention on the other hand.

UNESCO: Intergovernmental Oceanographic Commission