6 ms·
Maybe they'll just have to switch to Sulfur Hexafluoride. http://www.youtube.com/watch?v=d-XbjFn3aqE http://www.youtube.com/watch?v=d-XbjFn3aqE
by westicle 13y ago
Maybe they'll just have to switch to Sulfur Hexafluoride.
http://www.youtube.com/watch?v=d-XbjFn3aqE http://www.youtube.com/watch?v=d-XbjFn3aqE