可以防止由于蒸发造成水的损失。

This prevents water loss due to evaporation.

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保湿-减少水的损失和补充皮肤水分。

Hydrating - Reduce water loss and supplementing moisture to skin.

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根据区域水量平衡原理，从灌溉水的损失途径分析，提高灌溉水利用率有工程措施、管理措施和技术措施。

In accordance with regional water volume balance theory, there are structural, management and technical measures to improve efficiency of irrigation water by analyzing how irrigation water losses.

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