Meanwhile the growth rate and propagating direction of the variables of atmosphere and ocean in the coupled system are sensitive to the coupled time steps.

同时，耦合时间步长还可以对耦合系统中大气及海洋变量的增长率及传播方向产生影响。

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For blocking rate and dropping rate are two discrepant variables, we propose a variable of service grade that integrates the two variables as metrics for system service quality.

分析了考虑切换优先并采用预留保护信道法的无线系统的性能，提出利用一个综合阻塞率和掉线率这两个性能指标的系统服务等级变量作为系统服务质量的指标。

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