switching program verification expert system
swiveling turret
swivelling engine
SWTDL
SWTL
aerospace enamel
SXRT
BCA Flight
SXT
SXTF
Sycep Syndicat des Industries de Composants Electroniques Passifs
Sygnog
SYLDA
symbol of a unit
symbol of a unit [of measurement]
symbolic pattern
symdel symmetrical delta
symmetric aerofoil
VARGLASS
VARGLASSN
symmetric aileron
VARGLASSNO
symmetric double wedge
VARGLASSNO.3TYHP-TAN
symmetric double- wedge
symmetric flight
symmetric flutter
symmetric instrumentation
NON-FRAY
symmetric pull-out
symmetric region
symmetric separation
symmetric trajectory
symmetric vortex configuration
symmetrical mode
symmetrical point
SPI脉冲
symmetrical transfer trajectory
symmetry boundary condition
certain stroke
symmetry condition