Hereinto, DSU is shorted for database storage unit. It is one subsystem of communication based train control (CBTC) system.

其中，DSU是数据库存储单元的简称，它是CBTC系统所包含的诸多子系统之一。

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The Signalling System shall adopt Communications Based Train Control (CBTC) technology and support Unattended Train Operation (UTO).

信号系统须采用CBTC技术，以及能够支持车上无人的列车控制。

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Interventions based on research were designed to train and engage community health volunteers (CHVs) to implement a community-based control programme in Nepal.

研究设计的干预措施是为了培训和吸纳社区卫生志愿者，从而在尼泊尔实施以社区为单位的控制项目。

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