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helical ['helɪk(ə)l] n
mech.eng.	elicoidale
med.	spirale m

helical : 147 phrases in 17 subjects

Agriculture	8
Astronomy	1
Chemistry	4
Communications	3
Construction	7
Earth sciences	11
Electronics	16
General	2
Industry	9
Materials science	1
Mechanic engineering	36
Medical	17
Metallurgy	15
Municipal planning	1
Textile industry	1
Transport	14
Video recording	1