Forms show these data based on three basic types of relationships defined by the business logic: main topic, response, and response to response.

表单根据业务逻辑定义的三种基本关系类型——主题、回复和回复的回复——显示这些数据。

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Cirrus Logic is believed to be the main supplier of audio chips for the iPhone and iPad.

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But this philosophy may be flawed -- one of Sony's main competitors, Nintendo, is applying the same logic to its Wii U, albeit with starkly different results.

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