істинне число Маха
Mach / Mach number
airspeed/Mach (AS/MACH)
flight Mach number
critical Mach number
indicated Mach number (IMN)
local Mach number
Mach number effect
Mach number of a wind tunnel
supersonic speed (exceeds speed of sound / Mach 1)
Mach angle
Mach compression line
Mach cone
Mach rarefaction line
Mach front
Mach stem
Mach wave
true azimuth / bearing
true horizon
true north (TN)
bearing, true
true wind angle
true wind computer
true wind velocity
true heat capacity
knots true airspeed (KTAS)
runway true bearing
true air speed
true airspeed (TAS) indicator
true altitude
true east
true freezing point
true heading (TH)