单词	保持率
释义	保持率retention rate
随便看	master instruction tape{=mit} master instruction tape，mit master international frequency register master international frequency register--mifr master international frequency register，mifr master interrupt control master interrupt control，mic master i/o control block master i/o control block，miocb master items planning report master jest master-jest masterjest master joint master--joint master key master-key masterkey master key concept master key firing master keying circuit master keying system master key (train) master key variant key data set master key variant key data set，mkds