Check bills at the end of every month, and finish debt analysis chart, invoice statistics and payment statistics before the 5th of the next month.

每月底结帐并与次月5日前做出帐龄分析表、应收统计表和结帐统计表。

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Finally, this paper gives an analysis by an example of a formal specification based on invoice computing.

最后对基于票据计算的形式规格说明的例子进行了分析。

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