air curtain

n.

把空气压缩向下喷成的无形门帘；风幕；风障；

Air curtain
Air curtain
Air curtain
Air curtain for display
Jet entrainment rate in air curtain of open refrigerated display cases
Effectiveness and optimum jet velocity for a plane jet air curtain used to restrict cold room infiltration
Three-dimensional effects of an air curtain used to restrict cold room infiltration
Simulation of the performance of single jet air curtains for vertical refrigerated display cabinets
The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case
Experimental study of the performance of single-band air curtains for a multi-deck refrigerated display cabinet.
Design of air curtains used for area confinement in tunnels
Confinement of fire-induced smoke and carbon monoxide transportation by air curtain in channels
Airborne Nanoparticle Exposures while Using Constant-Flow, Constant-Velocity, and Air-Curtain-Isolated Fume Hoods