... unit replacement system 组件替换系统 ; 机组更换制 Unit Record System 单位记录系统 ; 公务员事务 unit construcction system 级合结构系统 ...
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unit medical record system 统一医疗记录系统
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But improving these tools has been slow going, largely because the higher-education lobby has fought federal efforts to create a "unit-record" system that could work across state lines to link students' educational and employment histories.
WSJ: Are Bachelor's Degrees Worth It?
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