stack segment

基本解释

Figure 8 - Data and stack segment
圖 8 - 數據段和堆棧段
In protected mode, which register references the descriptor for the stack segment?
在保護模式下，哪個寄存器引用棧段描述符。
These three keywords are to the stack segment just as "malloc" and "dealloc" are to the heap segment ... unnecessary.
這三個關鍵字之於棧，就像是“malloc”和“dealloc”之於堆……多餘。

Now, as an aside, there's another couple of layers at the very top above the stack and above the heap, but below the tech segment and those are called initialized data and uninitialized data.
題外話，在堆和棧的頂耑,還有好幾層，但是在技術段之下,他們被叫做初始化數據和未初始化數據。
哈彿公開課 - 計算機科學課程節選