This defines elements specific to the product type, and values for those elements can be provided when creating a product of that type. A simple view of this model is shown in Figure 3.
这将定义特定于产品类型的元素，并且在创建该类型的产品时提供这些元素的值。
Let's start by creating a simple model that represents a product.
我们从创建一个表示产品的简单模型开始。
We believe that professional will not become a barrier to communication, Provide a mature, efficient, simple and practical product is the premise of creating new value.
我们相信，专业不会成为沟通的障碍，提供成熟、高效、简单实用的产品才是创造新价值的前提。
We believe that professional will not become a barrier to communication, Provide a mature, efficient, simple and practical product is the premise of creating new value.
我们相信，专业不会成为沟通的障碍，提供成熟、高效、简单实用的产品才是创造新价值的前提。
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