填空题 Factors affecting aerodynamic lift include ______ and ______

填空题 A deformation within a material caused by stress is called ______

填空题 Two basic stresses to which a structure can be subjected are ______ and ______

填空题 A stressed aircraft skin structure made as a single shell is called ______

填空题 A material returns to original shape if not stressed beyond its ______

填空题 The tendency of airplane nose to turn opposite to the turn direction is called ______

填空题 A stall for rectangular wing begins at the wing ______

填空题 A fluid power system using noncompressible fluid is called ______