boiler tripping without turbine tripping

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

abnormal tripping

AC tripping

accident tripping operation

adaptive current fast- tripping protection

alternating current tripping system

anchor tripping line

anti-tripping bracket

automatic tripping

automatic tripping facility