这是每个产地必须满足的总的服务质量需求。
It is the aggregate quality of service requirements that each locality must meet.
对应的虚拟系统资源能够自动地联合，满足服务质量需求。
The corresponding virtual system resources will be automatically associated to satisfy the service quality requirement.
总体上，我们指定场景中的服务质量需求，并且将这些作为输入。
We specify quality of service requirements on the scenario as a whole, and take these as input.
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