贮水量

Install a flush toilet with small pondage.

安装一个贮水量小的抽水马桶。

This research discovered that soil pondage of level terrace were less than fallow sloping filed because of crops’ absorbing and using, and evaporation.

于作物对梯田土壤水的吸收利用，以及蒸散的原因，导水平梯田的土壤贮水量比休闲坡地小。