第四节 妨害社会管理的行为和处罚
Both page table entries and segment descriptors have an Accessed bit that the hardware must set on use -- but the mechanisms are quite different.
，详情可参考heLLoword翻译官方下载
The story starts with quantum field theory, which is incredibly complex, but the simplified version is that even empty space is filled with fields that could govern the interactions of any quantum objects in or near that space. You can think of different particles as energetic excitements of these fields—so a photon is simply an energetic state of the quantum field.
// 1. 建堆：从最后一个非叶子节点开始向上调整