input syntax layer 输入语法层
Syntax layer parses the data received on the base layer into the SIP message object.
编码层负责把底层接收的数据解析成为SIP消息对象。
Bottom-up approach is in the vocabulary, syntax, meaning the surface layer of finishing material to the hearing.
自下而上的方法就是在词汇，句法，寓意层的表面对听力材料进行精加工。
This system provides a support of presentation layer to the data file abstract syntax notation and the data grammatical conversion in order to achieve one's object of the sharing of data files.
该系统提供了表示层对数据文件抽象语法表示的支持及数据语法的转换，从而达到了数据文件共享的目的。
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