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沟灌 gōuguàn
hydroel.st. furrow irrigation; ditch irrigation
tech. border irrigation; corrugation irrigation; irrigation by furrow; ridge and furrow irrigation
沟灌
: 97 phrases in 10 subjects
Agriculture13
Architecture2
Bridge construction2
Desert science2
Ecology1
General1
Hydraulics5
Hydroelectric power stations19
Technology38
Water resources14