AC fault security power source system is to provide alternating current for unit safety shutdown when power cut happens for a long time due to power grid failure or other reasons.

交流事故保安电源系统是当电网发生事故或其他原因致使火电厂厂用电长时间停电时，提供机组安全停机所必需的交流用电系统。

youdao

Abstract: the public rental housing security level and the housing rent subsidies of the family unit are the core problems for the design of public rental housing system.

摘要：公租房的保障水平、以家庭为单位的租金补贴金额的测算是公租房制度设计中需要研究的核心问题。

youdao

The management office recently received many opinions about the security system management in each unit.

物业公司于近期多次接到园区业主对各楼宇门禁系统安全管理的意见。

youdao

Charles Hill, a former Metropolitan Police officer in the art and antiquities unit, is not surprised that the security system at the museum was broken.

BBC: News - Today - Today: Monday 23rd August

In Britain, such funds, locally known as unit trusts, have become a booming industry, thanks to a deep stockmarket and a modest social-security system.

ECONOMIST: A survey of fund management