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okresy m
gen. حقب
okres m
gen. طور   ؛مدة   ؛مرحلة
math. فترة   ؛دورة
okresy
: 77 phrases in 20 subjects
Automatic control1
Electric motors2
Electric traction3
Electronics4
Environment2
Isolation1
Mathematics10
Microsoft26
Power electronics1
Power system protection1
Radio3
Radiobiology5
Radiology2
Reliability4
Satellite communications5
Sound recording1
Telecommunications1
Telegraphy1
Ultrasound3
Wind Energy1