The numerical simulation of the filling stage in gas-assisted injection molding can give an instruction to product, so the precision of the result is important.
数值模拟的气体辅助注射成型充填阶段，可以给一个指令的产品，这样的结果的精度是非常重要的。
The theoretical model and research status of the simulation of powder injection molding filling process are reviewed. Their merits and demerits are analyzed and compared.
综述了目前用于粉末注射成形充模流动模拟所采用的理论模型及其应用研究现状，并对各自的优缺点进行了分析。
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