Acoustic gas measurement.
Møllgaard
K
K
Brüel and Kjaer, Naerum, Denmark.
D004867:Equipment Design; D005740:Gases / Q000032:analysis*; D008280:Magnetics; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D013016:Sound; D013057:Spectrum Analysis / Q000379:methods*
D005740:Gases