cab dash low air pressure light
engine test bed for simulating high-altitude(low air pressure)
low air pressure buzzer
low air pressure warning buzzer
low pressure air conditioning system
low pressure air receiver
low-pressure air stower
low-pressure low-permeability reservoir
Tire Low Pressure Indicator
brake air pressure indicator
High-pressure air pressure
hydraulic tank air pressure indicator
200MW steam turbine low-pressure cylinder
660MW low pressure outer shell
a long low-pressure pulse bag filter
a low pressure aspirator