最后，本文提出了无芯法连续生产空心钢锭技术需要解决的问题，以及在选定凝固材料和进行锭型设计时的参考意见。
At the end, the paper posted the problems which needed to be solved in non-sleeve technique, and also provided Suggestions in selecting the solidification materials and designing mould.
最后，对技术创新过程中应注意的几个问题发表了自己的意见。
Finally, this paper expresses its own several opinions in the course of technical innovation.
但系统测量精度等技术性细节问题还有待进一步完善，在文章的最后给出了系统的改进意见。
However, some technical details such as the accuracy of the system need to be further improved, and in the end of the paper some improvement advice is advanced.
最后就案例研究中发现的问题，提出加强设备过程管理和经济技术管理的意见和建议，并对今后的深化应用工作进行了展望。
Some advice of process management and technical economical management to the electric equipment was given, the author forecasted the deepen application of the theory studied in the paper at last.
最后就案例研究中发现的问题，提出加强设备过程管理和经济技术管理的意见和建议，并对今后的深化应用工作进行了展望。
Some advice of process management and technical economical management to the electric equipment was given, the author forecasted the deepen application of the theory studied in the paper at last.
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