data bac数据备份datan.数据；资料名词datum的复数形式.Data acquisition device数据采集卡data synchronizing unit数据同步器data of location survey定测资料data mixed transmission混合传输data-stream interface数据流接口data transport protocol数据输送协议data scattered strategy数据分散策略data-driven processor数据驱动处理器Data Center Architature数据中心架构data - drive iearning数据驱动