1 Old HSK word(s): 
☊氧气 ** C
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
氧 oxygen
气 steam, vapor / KangXi radical 84
Hsk Characters:
HSK -Characters and beyond:
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C Der Sport: Der Schwimmsport: 
Druckluftflasche + 氧气瓶 * +
Atemschutzgerät (S) [yang3 qi4 mian4 zhao4] 
氧气面罩
Flammtrennen [yang3 qi4 qie1 ge1] 氧气切割
Sauerstoff (S, Chem)Sauerstoffgas (S, Chem) [yang3 qi4] 氧气
Sauerstoffflasche (S) [yang3 qi4 ping2] 氧气瓶
Sauerstoffgerät (S, Tech)Sauerstofflasche (S, Tech) [yang3 qi4 tong3] 氧气筒
