Create a parameter for the report using that data set as the possible values.

使用数据集作为可能值来为报告创建一个参数。

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Model the spherical valve case with characteristic parameter which is the caliber of the valve, and according to some standards determine other structure sizes and create the data file.

以阀门的口径为特征参数，根据标准确定阀体的其他结构尺寸，并建立数据文件。

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