The tar utility bundles one or more files and directories into a single file, maintaining bytes, owners, permissions, file type, and station in the file system hierarchy of the original files.
tar 实用程序将一个或多个文件和目录打包为单个文件，并保持原始文件的大小、拥有者、权限、文件类型及其在文件系统层次结构中的位置。
2
The system is frequency flexible, connects hundreds of users to a single base station, and delivers superior range and link performance in voice, video and data transmission.
该系统的频率灵活，可将数百个用户连接到一个基站，提供范围广泛和性能优越的语音、视频和数据传输功能。
3
The Unsctened Kalman Filter (UKF) for nonlinear system is applied in passive locating by singlestation, and the general UKF is improved according to the specific application.