求翻译：研究结果表明：通过利用Procast对该大型中空轴件充型凝固过程的模拟，确定了铸件浇注位置及各浇道的设置对铸件缺陷的减少起到至关重要的作用，冒口位置及大小也对铸件的缩松、缩孔起到良好的改善作用。是什么意思？

The results show that: through the use of procast the large hollow shaft filling and solidification process simulation, casting the casting position and the runner set to reduce casting defects play a crucial role, riser location and size of play a good improvement on the casting Shrinkage.

Study results showed that: through the use of the large Procast hollow shaft part of the charge-freezing process simulation of casting, gating and the location of the set up process, the reduction of casting defects play a crucial role, position and size of the casting is also a song, with a hole to

The findings indicated that,Through uses Procast to this large-scale spatial axis sufficient solidification process simulation, had determined the casting pours the position and various running channels establishment to the defect casting reduced very important role, the rising head position and the

Research results indicate that the large hollow shaft with Procast simulation of mold filling and solidification process, determine the casting gating and runner set on casting defect reduction play a crucial role, riser location and size on shrinkage of castings, good improvements to the shrinkage

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