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波纹混凝土
 波纹混凝土
tech. corrugated concrete
|
 Y板
IT Y plate
 板
chem. block
hydroel.st. board; panel; plate; wafer
mech. board
met. sheet
sport. med. plaque

to phrases
波纹混凝土
tech. corrugated concrete
波纹混凝土
: 4 phrases in 1 subject
Technology4