测量总成后的尺寸，用该数据减去模具尺寸。

Measure the finished assembly and from that size subtract the die size.

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介绍了基于快速成型技术的快速铸造金属模具的工艺流程和影响模具尺寸精度的主要误差因素。

The process flow of rapid casting technology based on RP for metal molds and main error factors influencing mold's dimensional precision were introduced.

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因此，在粉末冶金工艺中，对尺寸变化尤其是对模具尺寸的设计进行控制与预测是非常重要的。

Accordingly it is very important to control and forecast the dimension change and the geometric shape variation of the final product in the powder metallurgy process, especially the design of mould.

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