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gully control
ecol. 沟道治理
hydraul. 冲刷控制
hydroel.st. 沟蚀防治
hydrol. 沟壑侵蚀控制
tech. 冲沟控制; 沟蚀控制; 沟壑控制
gully control
: 10 phrases in 3 subjects
Desert science1
Hydroelectric power stations5
Technology4