allowable shut-off time of fast shut-off valve

fall off [= bear off]

hang off [= stop off]

Off beat takes off

Off-Line Handwritten Chinese Character Recognition (off-line HCCR)

off-line trusted third party (off-STTP)

Off-on-off

one-off write-off

voltage cut off or current cut off

2-axle link-moving

2-D moving average filters

3D moving

3D moving targets

a moving two-level atom

a moving V-type three-level atom

a moving Ξ-type three-level atom

a slowly fluctuating moving point target

AC moving coil rectangular instrument

AC moving coil round instrument