X-axis
X axis (line)
X bracing
X list
X ration scale
X-ray flаw detection
X-ray inspection
X-ray photon
X-ray radiation
X-ray testing
X-rays
X ring
X-Ring
X series
X-shaped oil grooves
X time
X-type
X-type aerodrome
X unit
X-X line
X - X-ray – XRAY
XA-180/185
xenon
xenon searchlight