知识结构图 aerodynamics B. Low-density and free A continuum flow molecule flows C. Viscous flow D. Inviscid flow incompressible Previous DEf F compressible NOW CE.F subsonic transonic supersonic hypersonic知识结构图 aerodynamics A continuum flow B. Low-density and free -molecule flows C. Viscous flow D. Inviscid flow E. incompressible F. compressible subsonic transonic supersonic hypersonic Previous D,E,F Now C,E,F