Together this information forms a segment descriptor.
这些信息的集合构成了段描述符。
To use a given segment descriptor, its value is loaded into one of the segment registers.
要使用给定的段描述符，它的值需载入段寄存器中。
Other than segment descriptor numbers, the contents of these registers are inaccessible to all software.
除了段描述符的号码以外，这些寄存器的内容对所有软件来说都是不可访问的。
A segment descriptor provides the base address of a segment and access rights, type, and usage information.
段描述符提供了段基址、访问权限、类型和使用信息。
In order to update a segment register, the corresponding segment descriptor must be modified in kernel memory and then reloaded into the segment register.
更新段寄存器时，与其相应的段描述符必须在核心内存中修改，然后重新载入段寄存器。
Each time a segment selector is loaded on to segment registers, the corresponding segment descriptor is loaded from memory into a matching non-programmable CPU register.
每次将段选择器加载到段寄存器中时，对应的段描述符都会从内存加载到相匹配的不可编程CPU寄存器中。
A reference was made to a segment not present in memory (one in which the Segment-Present flag of the segment Descriptor was cleared).
引用一个不在内存中的段(段描述符的段存在标志为空)。
A reference was made to a segment not present in memory (one in which the Segment-Present flag of the segment Descriptor was cleared).
引用一个不在内存中的段(段描述符的段存在标志为空)。
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