minimum flight altitude

minimum level

minimum usable field-strength ， minimum usable power flux density

usable minimum immersion depth

minimum usable field-strength

minimum usable power flux density

cleared flight level

flight level

Level Flight

level-flight stalling speed

steady level flight

LEVEL level

minimum inhibitory concentration and minimum bactericidal concentration

the minimum inhibitory concentration and minimum bactericidal concentration

Flight-by-Flight Spectrum

4-level frequency modulation (4-level FM)

bi-level programming model with two lower level models

coupling mechanism between upper level and low level jet

coupling of high level jet and Low level jet