Wind tunnel ventilation:
-
Helium balloon
-
The work of oxygen equipment, the release of
-
Air release with a loud whistling creak,
-
Rope torsion
-
Air bleed, cylinder pressure, Air compressor
-
Balloon descent
-
Inflating a mattress
-
Construction, compressor discharges air
-
Fighting the fire with blacksmith furs
-
Wind tunnel ventilation
-
Air compressor operation
-
Mask breathing
★★★★★