actual running time

Average Running Time

computer running time

differential running time

elapsed running time meter

idle running time

Long-time running

optimal running time

Real-time running system

running time on a staff

running-time environments

test of the running time of program

valid running time

running test time

running-in time

time related running balance

time sharing running mode

Time-Time-Time Switching Network TTT

discrete-time time-delay system