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四角形 sìjiǎoxíng
avia. quad
hydroel.st. square
met. quadrangle; tetragon
tech. quadrilateral
四角
gen. quadrangle
四角〔边〕形
gen. tetragon
四角【边】形
geophys. quadrangle
四 角形
: 29 phrases in 12 subjects
Agriculture1
Automobiles1
Drilling1
Electronics3
General4
Hydroelectric power stations2
Mathematics1
Metallurgy1
Oil / petroleum1
Shipbuilding3
Technology10
Telecommunications1