Application servers (or clusters) are members of a bus.

应用服务器(或集群)是总线的成员。

youdao

Which industries or clusters are significant sources of emissions or other environment risks?

哪些工业或组群是主要的排放或其它环境风险的源头？

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A bus can span multiple nodes and machines, and has one or more servers or clusters as its bus members.

一个总线可以跨多个节点和机器，拥有一个或多个服务器或集群作为其总线成员。

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Plaques are unusual clusters, or groups,of proteins.

VOA: special.2011.02.08

There is still debate whether single prions or clusters are the villains.

FORBES: Magazine Article

So always remember to look for groups, or clusters, of behavior.

FORBES: 4 Telltale Signs of a Liar

The irregular satellites are grouped into distinct families or clusters.

BBC: More moons for Jupiter