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正割 zhènggē
gen. transversal
el. secant (sec.)
hydroel.st. secant
oil secant (sec)
正割线 zhènggē
tech. secant
正割: 39 phrases in 17 subjects
Aviation3
Bridge construction5
Commerce2
Cooking1
Drawing1
Earth sciences1
Economy1
Electronics2
Finances1
General1
Mathematics2
Metallurgy1
Oil / petroleum1
Plastics1
Securities1
Space1
Technology14