互为备份 meaning in English

mutual backup

Based on the status quo of two or more ins be equipped in naval ships , a new method of dins ( double inertial navigation system ) was presented
摘要根据舰艇中一般配备两套或多套互为备份惯导系统的情况，提出了双惯导系统的阻尼新方法。
In 2005 , “ chinasat 9 ” direct broadcast satellite and “ chinasat 6b ” telecommunication satellite projects were approved by the state council . “ chinasat 6b ” and “ chinasat 9 ” direct broadcast satellite will enhance the technology equipments abilities in chinese telecommunication tv - broadcast market for chinasat , satisfy the latest requirements to the satellite telecommunications and broadcast programmes transmission services by the latest satellite technologies
该系统将卫星通信与基于ip的宽带业务相结合，能够与地面宽带网络互为备份和补充，可向国内用户提供包括互联网宽带接入、话音、数据、视频和多媒体在内的综合信息服务。