特别地，为了提高性能和可用性，对集群体系结构的广泛使用经常要求复制数据。
Particularly, the wide use of cluster architectures often requires replicate data for performance and availability reasons.
提出了一种在具有可扩展机群体系结构的通用超级并行机环境下的快速直线检测算法。
A quick lines detection algorithm under the general super parallel system environment with scalable cluster structure is presented.
本系统采用三层体系结构，并按照用户群体：学生、教师和系统管理员，将系统划分成三个子系统。
The system adopts three-ply structure model, according the user colonies, it is divided into three sub-systems for students, teachers and system administrators.
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