【摘要】 根据国内外的研究应用情况及作者几年来的研究，提出了在国内大规模应用干砂消失模铸造必须解决的几个关键技术问题更多还原

【Abstract】 According to the research and applied status at home and abroad and the auther’s experimental results,several key problems which must be solved for mass applying lost foam process casting in China were suggestted.更多还原