a, traditional aerodynamics: pneumatic tools, rock drills, pneumatic picks, pneumatic wrenches, pneumatic sandblasting.
b, instrument control and automation devices, such as tool change in the machining center.
c, vehicle braking, door and window opening and closing.
d, air-jet loom uses compressed air to blow the weft yarn instead of the shuttle.
e, food, pharmaceutical industry, using compressed air to stir the slurry.
f, the start of large marine diesel engines.
g, wind tunnel experiment, underground passage ventilation, metal smelting.