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skuteczny adj.
gen.	effective; efficient
agric.	efficacious
nieskuteczny adj.
gen.	ineffective

skuteczny: 94 phrases in 29 subjects

Antennas and waveguides	10
Chemistry	1
Commerce	1
Communications	6
Construction	1
Electric traction	2
Electricity generation	2
Electronics	5
Finances	2
General	6
Health care	1
Human rights activism	2
Immigration and citizenship	4
Labor law	1
Law	14
Magnetics	5
Mathematics	9
Medical	2
Natural sciences	1
Oil / petroleum	1
Patents	1
Power lines	2
Power system protection	2
Radio	3
Satellite communications	2
Semiconductors	2
Sound recording	2
Telecommunications	2
Transport	2