你们可以得到所有，天文学中的有用信息，只要对双星系统进行，多普勒顿移。
And so you get all this useful information in astronomy by making the Doppler shift measurements of binary systems.
当你需要查看计算机名或者其他简单系统信息时会变得有用。
This can be helpful if you need to see the name of a computer or simple system statistics.
这些成员例程并不会修改文件系统，但会根据path名称提供有用的信息。
These member routines don't modify the file system but do provide useful information based on the path name. This section provides an overview of several of these routines.
应用推荐