第四十九条 国家严格限制铀浓缩设施、设备,乏燃料后处理设施、设备,重水生产设施、设备等物项及其相关技术等核扩散敏感物项,以及可以用于核爆炸装置的材料的出口。
Both page table entries and segment descriptors have an Accessed bit that the hardware must set on use -- but the mechanisms are quite different.
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