backupsn.备份
backupn.后备
backup functional board备件功能板
backup control data set备份控制数据集
backup roll' s balancing血莲
backup reference station备用基准站
backup domain controller备份域控制器
Backup Aircraft Inventory后备飞机库存
backup roll for cold mill冷轧支撑辊
backup acquisition system后援采集系统
backup and recovery system备份恢复体系
backup absorbent cartridge后备吸收筒