这些符号可以用来对各种代码段和数据段进行命名，包括经过初始化的和未初始化的。

The symbols are used for naming various sections of code and data, both initialized and uninitialized.

youdao

题外话，在堆和栈的顶端，还有好几层，但是在技术段之下，他们被叫做初始化数据和未初始化数据。

Now, as an aside, there's another couple of layers at the very top above the stack and above the heap, but below the tech segment and those are called initialized data and uninitialized data.

youdao

第一段包含初始化应用程序的事件处理函数(onload)和数据库初始化，如清单3所示。

The first block contains the event handler to initialize the application (onload) and the initialization of the database, as shown in Listing 3.

youdao

Now, as an aside, there's another couple of layers at the very top above the stack and above the heap, but below the tech segment and those are called initialized data and uninitialized data.

题外话，在堆和栈的顶端,还有好几层，但是在技术段之下,他们被叫做初始化数据和未初始化数据。

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