Air Curtain 1 : (1) A shroud of bubbles released underwater to control oil spills. (2) Jets of air installed near doorways to prevent treated air from spilling out open doorways
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}