The capacity of a wastewater land treatment system varied with fielddrainage conditions.
不同排水条件下土地处理系统的污水处理能力不同。
2
Since the 17th century, fielddrainage has been one of the prerequisites of efficient agriculture.
自17世纪以来,农田排水设施一直是高效农业的先决条件之一。
3
This paper analyzes the enclosure of fields, the transfer of seedlings and the personnel involved in paddy-fielddrainage and rice production in the Lake Tai region.