From GAWDAwiki
Mixing chamber is that part of a welding or cutting torch in which the gases are mixed for combustion.[1]
A mixing chamber is the last (coldest) stage of the dilution refrigerator where the phase transition of mixtures occurs.[2]
References
- http://www.weldguru.com/welding-terminology.html
- http://www.lnl.infn.it/~auriga/auriga/glossary.html