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spillway tunnel
bridg.constr. 泄洪隧道
eng.geol. 溢洪隧道
hydroel.st. 泄洪隧洞; 溢洪隧洞
tech. 溢流隧洞; 溢流隧道
spillway tunnel
: 9 phrases in 2 subjects
Hydroelectric power stations4
Technology5