单词	同岛
释义	同岛 homology group
随便看	private line access private line arrangement private line assured service private line automatic ringdown private line auto ring down private line car private-line car private line characteristic private-line circuit private line exchange private line interconnection service Private Line Interface Private Line Network private line of telecommunication private lines private line service private line switching private line telephone private line telephoner private line teleprinter service Private Line Teletype private line teletypewriter private line teletypewriter service private-line teletypewriter service private line toll switchboad