conveying by low concentration air

blocking by low pressure

Descaling by Low Pressure Water

high-and low-pressure by-pass

revamp by low pressure

ventilation by low pressure

low-pressure low-permeability reservoir

conveying by high concentration air

inhaling-conveying mode

piston-conveying pressure

slurry conveying by pipeline

water conveying pressure pipe

assessing mode by classification

control mode by time

initial pressure mode

Low-low satellite to satellite tracking mode

pressure mode

Stand-by mode

under-pressure mode