Thoron /INDUSTRY-CHEM,ENG-ELECTRICAL/
[DE] Thoron
[EN] radon-220; thorium-emanation; thoron
[FR] radon 220; thoron
Thorin,Thoriumoxid,Thoron /INDUSTRY-CHEM/
[DE] Thorin; Thoriumoxid; Thoron
[EN] ThO2; thoria; thorin; thorium oxide
[FR] ThO2; oxyde de thorium; thorine