但是别担心：它实际上有一定的格式。
But don't worry: It's actually logical in format. Let's look at the elements of the command.
第四章介绍了IFF信号的格式和模式以别流程，讨论了复杂情况下IFF信号的识别问题。
Chapter 4 introduces the formats and pattern recognition flow of IFF signals, and discusses the IFF signals recognition in complex situation.
但这些为不同应用服务的信息都存储在不同的数据源之中，其数据内容，数据格式千差万别。
But the information for the different applications is stored in different data source, the data content and formats vary widely.
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