automatic regulation back-pressure

average back pressure

axial back-pressure turbine

back presssure turbine

back -pressure

Back pressure adjusting system

back pressure armlift method

Back pressure at the rotary kiln terminal

back pressure condensate return system

back pressure control station

back pressure curve

back pressure engine

back pressure evaporation

back pressure extraction turbine

back pressure forming

back pressure governor

back pressure manometer

back pressure multi-effect evaporator

back pressure of steam trap