Việt
thư viện phiên làm việc
thời gian làm việc
Anh
session library
work session
activity duration
length of service
operate time
operational time
productive time
run time
target phase
working time
session library, work session /toán & tin/
activity duration, length of service, operate time, operational time, productive time, run time, target phase, work session, working time