多重执行绪可以同时存取应用程序状态变数。
Application state variables can be accessed by multiple threads at the same time.
负载测试会建立软体程序的预期使用模型，方法是模拟多位使用者同时存取程序。
A load test models the expected usage of a software program by simulating multiple users who access the program at the same time.
在网络计算环境下，当大量客户同时存取数据库资源，数据库服务器常成为性能瓶颈。
In network computing environments, as large number of concurrent user access Shared database, the database servers often become performance bottlenecks.
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