component/components：组件，这是术语，基本没有疑问。这里用复数，估计表示这里用到了多个组件。
notion：概念，这是正常的解释

所以可以译不组件的概念，或相似的意义，直接写为“组件”也无不可。

另外，notion有IT中有时也有标记的意思，这就要看上下文决定了。

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下面是两个Windows Server 2003中的例子：
Operating system's notion of the local date and time of day.
操作系统的本地日期和时间标记。

The Type property reveals the type of route. The values direct(3) and indirect(4) refer to the notion of direct and indirect routing in the IP architecture. Setting this object to the value invalid(2) has the effect of invalidating the corresponding entry in the RouteTable object. That is, it effectively disassociates the destination identified with said entry from the route identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant ipRouteType object.
属性的类别显示路由的类别。值直接 (3) 和间接 (4) 指的是 IP 体系结构里的直接和间接路由的概念。将这个对象的值设置为无效 (2) 有使 RouteTable 对象里相对应的项目无效的效果。换句话说，它有效地使所指项目辨识的目标与所指项目辨识的路由不再有关联。代理程序是否将无效的项目从表格中删除要依每个执行而定。因此，管理站必须准备从与当前不在用的项目相对应的代理程序哪儿接收表格式的信息。对此类项目的正确理解需要对有关的 ipRouteType 对象的检查。

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Note added at 20 mins (2007-06-09 05:38:49 GMT)
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bug fix: 所以可以译不组件的概念 -> 所以可以译为“组件的概念”