With a virtual system, pick the middleware component that is needed and how many of each.

在使用虚拟系统时，需要挑选所需的中间件组件以及每个组件的数量。

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Footprint: the amount of virtual memory required to execute the component can determine its granularity.

占用空间：执行组件所需的虚拟内存的量可以决定其粒度。

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Because of the virtual nature of the SOA component model, many SOA components naturally support multiple implementation technologies.

因为在性质上SOA组件模型是虚拟的，所以许多SOA组件自然支持多种实现技术。

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And they do not have the diverse revenue streams such as the virtual goods component that YY does.

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The jobs are physically based in Wisconsin but there is a virtual class component as well, which has been used by vets from San Francisco to Pittsburg to New York, Weichert said.

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After putting together the first piece in roughly three weeks, the next step is completing the platform and building out the "virtual reality" component of the system.

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