单词	回送检查
释义	回送检查loopback checking
随便看	telegraph line telegraph lines telegraph logger telegraph magnifier telegraph message s telegraph messages telegraph modulated wave telegraph modulation telegraph money order telegraph money order 电汇票 telegraph, morse、morsetelegraph telegraph multiplexer telegraph nautical mile telegraph network telegraph noise telegraph office telegraph office 电报局 telegraphone telegraph operater telegraph operator telegraph orderwire telegraph or telephone block system telegraphoscope telegraph plant telegraph plant;desmodium gyrans dc.