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кусочно линейная аппроксимация stresses
math.	piecewise line approximation (ssn); piecewise linear approximation (ssn)
кусочно-линейная аппроксимация
automat.	piecewise line approximation (контура деталей)
comp.	piecewise linear approximation
econ.	linear approximation; piecewise approximation; polygonal approximation; segment approximation
el.	piecewise-line approximation (ssn); piece-wise linear approximation (ssn)
IT	piecewise-linear approximation
Makarov.	piecewise line approximation (контура деталей)
mech.	piece-wise approximation
microel.	linear piecewise approach
tech.	piecewise-smooth patch

кусочно линейная аппроксимация: 6 phrases in 3 subjects

Electronics	4
Mass media	1
Oil and gas	1