As noted previously, the Software Product Line approach is advocated to address the kernel, optional, or alternative activities at a business level.
如前面所提到的，提倡用软件产品线方法来描述业务层中的核心的、可选的，或选择性的活动。
Figure 5 illustrates generic types of activities and interrelationships that are commonly included in product line operations. An assessment at the product line level is primarily focused on.
图5描述了通常包括在产品线级的通用的活动和相互关系。
Target cos is product cost level which enterprise to achieve in production and operation activities.
所谓目标成本是企业在生产经营活动中某一时期要求实现的产品成本水平。
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