提出不同土壤类型地下水适宜埋深，为黄淮平原节水灌溉和排水标准提供依据。
The suitable depth of groundwater level was presented for different kinds of soil, which can serve as the reference and standard for...
而后通过排水管进入水库，再从那儿运送到水处理厂，经过净化，最终达到饮用水标准。
Before being taken by drains to reservoirs, and thence to treatment plants where it is cleaned to drinking-water standards.
而后通过排水管进入水库，再从那儿运送到水处理厂，经过净化，最终达到饮用水标准。
Before being taken by drains to reservoirs, and thence to treatment plants where it is cleaned to drinking-water standards.
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