The same version and patch level of a product can be used on servers throughout the world, thereby reducing the cost of support, maintenance, and training.
同一版本和补丁级别的产品能在世界范围的服务器上使用，因而降低了支持、维护和培训的费用。
To help view the product cost incurred by different level, a product family structure is represented by a hierarchical classification of product cost.
为了检视每个阶层所引发的成本，我们以产品族的方式来呈现整个产品阶层式的成本结构。
Quality cost is the cost which is needed to keep product quality at the given level, it includes prevention cost, appraisal cost, internal losing cost and external losing cost.
质量成本是指将产品质量保持在规定的水平上所需的费用，它包括预防成本、鉴定成本、内部损失成本和外部损失成本。
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