资料来源 : Free On-Line Dictionary of Computing

run time
     
        1. The elapsed time to perform a computation on a particular
        computer.
     
        2. The amount of time a processor actually spent on a
        particular process and not on other processes or overhead (see
        {time-sharing}).
     
        3. The period of time during which a program is being
        executed, as opposed to {compile-time} or load time.  The term
        should be hyphenated when used as an adjective.
     
        4. {run-time support}.
     
        (2001-09-14)