1) pre-aggregation
预聚集
1.
Because of the corrective and natural change of dimensions,the corrective and natural change of pre-aggregation are raised inevitably.
在数据仓库中通常采用预聚集操作生成聚合数据的方法提高查询效率,由于维表不可避免发生纠错改变和自然改变,从而引发了预聚集的纠错改变和自然改变。
2.
In order to improve query performance,data warehouse usually contains pre-aggregation.
数据仓库通常都包含预聚集。
2) pre-aggregated data
预聚集数据
1.
it is necessary to timely maintain for them in order to make the pre-aggregated data in distributed data warehouses synchronously reflecting the changes of data resources.
分布式数据仓库中的数据大多来源于多个分散、异构及自治的底层业务数据库,其信息往往以实视图的形式分布存储在多个结点上,其中,预聚集数据是实视图的一个重要组成部分。
3) aggregated reservation state
聚集预留状态
1.
Management of aggregated reservation states for RMD based on clock synchronization
时钟同步的RMD聚集预留状态管理
2.
This paper first introduces the QoS Signaling Protocol framework of the IETF working group on Next Steps In Signaling (NSIS), then RMD (Resource Management in DiffServ), the QoS signaling model of the DiffServ network, and its algorithms for managing aggregated reservation state are introduced and analyzed.
该文介绍了IETF下一代信令工作组NSIS(Next Step In Signaling)的QoS信令协议框架,分析了区分服务网络QoS信令模型-RMD(Resource Managementin DiffServ)及其聚集预留状态管理算法。
4) predictive aggregate queries
预测聚集查询
5) predictive range aggregate queries
预测范围聚集查询
6) prepolymerization
预聚
1.
Engineering Research in Prepolymerization Process of Polycarbonate Synthesis Through Melt Transesterification;
聚碳酸酯熔融酯交换法预聚过程的工程研究
2.
The effects of prepolymerization and postcure temperature on the dielectric performance of bismaleimide-cyanate ester copolymer are investigated in this article.
研究了预聚工艺和后固化温度对双马来酰亚胺/氰酸酯共聚物介电性能的影响。
补充资料：聚集经济（聚集利益）（聚集效应）
n聚集经济（聚集利益）（聚集效应）是指由于某工业部 n门向某特定地域集中新产生的供生产成本降低的效果。因为分工协作，扩大生 产规模，节约使用基础设施等会降低生产成本。 n
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条