They can also be purely in-memory objects with no backing store.

它们可以是一些纯粹的内存对象，只要不用于后备存储。

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It serves as the backing storage for the in-memory translation memory of a project.

它为项目的内存翻译记忆进行备份储存。

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The system maintains a ready queue consisting of all processes whose memory images are on the backing store or in memory and are ready to turn .

系统在后备存储器或内存中维持一个组成内存映像所有过程的准备队列并做好执行的准备。

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