Many systems are designed at three primary levels: system, subsystem, and component, as shown in Figure 1.
许多系统是在三个主要层次上设计的：系统、子系统和组件，如 图 1 所示。
2
Elasticity in a system or component of a system (I'll use software as an example, since I work with IBM WebSphere eXtreme Scale every day) implies three specific degrees of freedom
系统或系统组件中的弹性（我将以软件为例，因为我每天都与 IBM WebSphere eXtreme Scale 打交道）暗示三种特定的自由程度
3
We first gives the general results, and then analyse two componentthree state system.