The data structure that identifies the physical location and status of a page of virtual address space. When a virtual page is in memory, the PTE contains the page frame number needed to map the virtual page to a physical page. When it is not in memory, the page table entry contains the information needed to locate the page of secondary storage (disk).; 標(biāo)識(shí)虛擬存儲(chǔ)地址空間的一個(gè)頁(yè)面的物理位置和狀態(tài)的一種數(shù)據(jù)結(jié)構(gòu)。 當(dāng)虛存頁(yè)是在實(shí)存儲(chǔ)器中時(shí),頁(yè)表項(xiàng)含有將虛頁(yè)轉(zhuǎn)換為實(shí)頁(yè)的頁(yè)框號(hào);當(dāng)虛存頁(yè)不在實(shí)存儲(chǔ)器 中時(shí),則頁(yè)表項(xiàng)含有在輔助存儲(chǔ)器(磁盤)中查找該頁(yè)所需的信息。