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key wall
archit. 齿
eng.geol. 齿键式挡墙; 齒牆
hydroel.st. 齿墙; 刺墙
key-wall
gen. 齿〔刺〕墙
hydroel.st. 齿墙; 刺墙
key- wall
: 3 phrases in 2 subjects
Hydroelectric power stations2
Technology1