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hélium m
food.ind. Helium n
med. Helium n (helium)
hélium: 63 phrases in 20 subjects
Astronomy1
Automated equipment2
Chemistry2
Construction1
Earth sciences7
Electronics1
Environment1
General8
High energy physics7
Measuring instruments2
Medical7
Medical appliances3
Natural resourses and wildlife conservation1
Natural sciences1
Nuclear and fusion power1
Nuclear physics2
Physical sciences6
Superconductivity5
Technology2
Радиоактивное излучение3