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to phrases
rayons X durs
chem. harte Röntgenstrahlen
med.appl. harte Strahlen; kurzwellige Röntgenstrahlen
rayon X dur
antenn. harter Röntgenstrahl
rayons X durs: 8 phrases in 3 subjects
Medical appliances4
Nuclear physics2
Радиоактивное излучение2