blending ratio of vacuum residue
hydro-cracking of vacuum residue
Karamary vacuum residue
Shenbei-Daqing vacuum residue
Vacuum Residue Fraction
microwave vacuum drying combined with vacuum drying
non-perturbative QCD vacuum and vacuum condensate
vacuum dryer =vacuum drier
vacuum drying plant and vacuum freeze drying plant
126 kV double-break vacuum circuit breaker
20 kV outdoor on-post vacuum circuit breaker
24 kV outdoor high-voltage AC vacuum circuit breaker