如果必要的话，把系统字段的值存储在一个辅助的变量中。

If necessary, store the values of system fields in auxiliary variables.

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Mapping editor的属性页中使用的有些输入字段包含内容辅助功能，用于在语法很重要时提供帮助。

Some of the entry fields that are used within the property pages of the Mapping editor contain content assist to help when syntax is important.

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结合收费稽查的实际，利用收费记录中特征字段和偷逃通行费现象之间的关联，文章分析并设计了用于辅助收费稽查的BP神经网络模型。

Make use of the association between toll record and toll evasion phenomenon, combined the actual toll audit, this paper analyzed and designed a BP neural network model for the toll audit.

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