建造小水坝相对要便宜一些，在印度被称为水槽的简易水库通常由当地村民建造和维护保养。
A small dam is relatively cheap to construct: modest reservoirs known in India as tanks used to be built and maintained by local villagers.
本实验创立了二种水产养殖池塘底泥总氮含量简易测定法，分别称为总氨法和硝酸盐法。
Two alternative methods measuring total nitrogen of aquaculture pond soils, named total Ammonia method and Nitrate method, were established.
本实验创立了二种水产养殖池塘底泥总氮含量简易测定法，分别称为总氨法和硝酸盐法。
Two alternative methods measuring total nitrogen of aquaculture pond soils, named total Ammonia method and Nitrate method, were established.
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