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Experimental study on new method and automatic system for fast evaluating Al-Si alloy modification e
[期刊论文] 作者：SHI Dequan,LI Dayong,GAO Guili,
来源：黑龙江科技学院学报 年份：2006
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
[期刊论文] 作者：LI Dayong,SHI Dequan,WANG Lihu,
来源：清华大学学报 年份：2004
Verrnicular cast iron is used in certain fields because of its special physical properties. However, it is difficult to control the quality from the front of th...
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