A persistent closure of a managed root entity x is defined as the set of managed entities C(x) ={e}, where e is reachable from x directly or indirectly via a persistent relationship.
管理根实体 x 的一个持久化闭包被定义为一个管理实体集 C(x) ={e}，其中 e 可以直接或间接通过一个持久化关系从 x 访问。
Objective: to contract captopril with national captopril in depressing high blood pressure effect, compliance, persistent treatment rate and the value-effect relationship.
目的探讨开搏通与国产卡托普利的降压效果、顺应性、坚持治疗率及价—效关系。
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