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余切 yúqiē
gen. cot
hydroel.st. cotangent
oil cotangent (cot)
余切 yúqiē
earth.sc. cotangent
余 切: 34 phrases in 17 subjects
Air defense1
Automobiles1
Aviation2
Bridge construction2
Business1
Compressors1
Earth sciences1
Finances1
General2
Geophysics1
Mathematics2
Metallurgy3
Oil / petroleum3
Plastic surgery2
Plastics1
Space1
Technology9