The following terms were included:
"direct current", Gleichstrom, DC, 直流
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International Electrotechnical Commission (IEC),
IEC 60479-1:2018: 1-72, ISBN 978-2-8-3226295-5
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German Commission for Electrical, Electronic & Information Technologies of DIN and VDE (DKE),
DIN EN IEC 60974-1:2018-12 VDE 0544-1:2018-12
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International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.90 (07/2018): 1-28
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German Commission for Electrical, Electronic & Information Technologies of DIN and VDE (DKE); Association for Electrical, Electronic & Information Technologies (VDE) (ed.),
Normungs-Roadmap: 1-128
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German Commission for Electrical, Electronic & Information Technologies of DIN and VDE (DKE),
DIN EN 50122-1 VDE 0115-3:2017-10
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German Bundestag (Parliament of the Federal Republic of Germany),
Sachstand, WD 8 - 3000 - 022/17: 1-13
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Federal Office for Radiation Protection (BfS),
1-8
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German Commission for Electrical, Electronic & Information Technologies of DIN and VDE (DKE),
DIN EN 61140 VDE 0140-1:2016-11
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Ministerium für Klimaschutz, Umwelt, Landwirtschaft, Natur und Verbraucherschutz des Landes Nordrhein Westfalen (MKULNV),
1-24
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German Social Accident Insurance (DGUV),
Fachinformation: 1-3