时间总和 meaning in Chinese

temporal summation

The " sys " field tells you the sum of cpu time used by the system as a whole
“ sys ”字段告诉您整个系统占用的cpu时间总和。
The " user " field tells you the sum of cpu time used by the user processor for the operation
“ user ”字段告诉您用户处理器为该操作而占用的cpu时间总和。
In this case , an mbr object s lifetime is the total time the object remains active in memory
（在这种情况下， mbr对象的生存期是该对象在内存中处于活动状态的时间总和。