试图读取或写入内存保护。
NET的内存保护功能对于数控系统的稳定性具有重要意义;
NET has memory protecting function which is crucial to the stability of CNC system.
PDP-15 兼容早期的 PDP-9 并包括各种高级功能,包括内存保护和浮动点。
The PDP-15 was compatible with the earlier PDP-9 and included various advanced features, including memory protection and floating points.
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