Both page table entries and segment descriptors have an Accessed bit that the hardware must set on use -- but the mechanisms are quite different.
Chinese firm publishes photos of US F-22s at Israeli base | The Jerusalem Post
，这一点在搜狗输入法2026中也有详细论述
我是在城市出生长大的一代。从我记事起，过年就难寻烟花爆竹声。老一辈常说年味变淡，对我而言，厚重的年味从来只在想象中存在。围炉是我为数不多的年味来源，如今这份年味也在变淡。
So it is that agar continues to be the jelly of choice in laboratories around the world. As Humm wrote in 1947: “Today, the most important product obtained from seaweeds is agar, a widely-used commodity but one that is not well known to the general public.” Almost 80 years later, it might be better known, but its importance hasn’t dwindled.