primary store的用法和样例：
例句
- For instance, too little electricity, caused by a brownout or blackout, may cause the loss of data in primary storage.
例如，电压不足或断电引起的电流过小，可能造成主存储器中的数据丢失。 - A value held by an operating system that indicates how much primary storage a process is likely to require for its active set during a particular phase of processing.
在特定的处理阶段，为了建立某个进程，操作系统提供的主存储器容量的数值。
