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排水盲沟
archit. weep drain
eng.geol. weeping drain
hydroel.st. weeper drain
met. weeper drains
tech. blind ditch; ditch drainage
排〔集〕水盲沟
construct. weeper drain
排 水盲沟: 7 phrases in 3 subjects
Engineering geology1
Hydroelectric power stations2
Technology4