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[期刊论文] 作者：Li Yanfeng,
来源：数字通信世界 年份：2006
For the fixed network operators, the cell phone industry has strong impact on the traditional fixed telephone industry. The expense of cell phone reduces co...
[期刊论文] 作者：Li Yanfeng,
来源：Voice Of Friendship 年份：2012
On the evening of April 12，...
[期刊论文] 作者：Li Yanfeng,
来源：Voice Of Friendship 年份：2012
Over 300 people, including many disabled, from the United States, Britain, Australia, Japan, the Republic of Korea (ROK) and another 12 countries arrived in Jinan on September 25, 2011 to take part in...
[期刊论文] 作者：Tang Xiaofu,LI Yanfeng,
来源：黑龙江科技学院学报 年份：2001
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...
[会议论文] 作者：Li Yanfeng,Zhang jingde,
来源：2008年中日水环境污染防治与修复学术研讨会 年份：2008
The combined processes as pilot scale were designed and used to treat micro polluted raw water. The combined processes were composed by sedimentation and DAF. T...
[会议论文] 作者：Li Yanfeng,Zhang jingde,
来源：2008年中日水环境污染防治与修复学术研讨会 年份：2008
The combined processes as pilot scale were designed and used to treat micro polluted raw water. The combined processes were composed by sedimentation and DAF. The results showed that the combined proc...
[期刊论文] 作者：LI Yanfeng WANG Xiaolong ZHANG,
来源：中国反应性高分子：英文版 年份：2006
...
[期刊论文] 作者：Li, Yanfeng, Ji, Denghui, Liu,,
来源：稀有金属：英文版 年份：2012
The fact that there are Mn2+ at the A sites in the ABO3 perovskite phase of manganites with the nominal composition La0.6-xNdxSr0.1MnO3 showed by detailed exper...
[期刊论文] 作者：LI Yanfeng,WANG Xiaolong,ZHANG,
来源：反应性高分子（英文版） 年份：2004
The progress on the molecular design, synthesis and characterizations of some kinds of pyridine-containing heteroaromatic polymers in main chain were reviewed i...
Mesozoic-Cenozoic Multi-Stage Intraplate Deformation Events in the Langshan Region and their Tectoni
[期刊论文] 作者：ZHANG Jin,LI Jinyi,LI Yanfeng,,
来源：地质学报：英文版 年份：2014
在 Langshan 区域，西北的中国，自从中生代，显著多级式的 intraplate 变丑事件发生了，包括(1 ) 东北惹人注目可锻的左侧面的罢工滑倒在期间中间迟了三叠纪，它是仔细与在诺思中国和...
[期刊论文] 作者：LI Yanfeng MI Xujun GAO Baodon,
来源：稀有金属：英文版 年份：2008
在在一个常数下面的 Ni50.2Ti49.8 合金的行为和转变温度使用了的形状记忆上骑车的 thermomechanical 的效果 300 强调 MPa 被调查。骑车的 thermomechanical 导致象脱臼那样...
Roles of Te and Mn in the two phases of manganite with nominal composition La_（0.6）Sr_（0.1）Te_xMnO_3
[期刊论文] 作者：LI Yanfeng,JI Denghui,ZHAO Zhi,
来源：稀有金属：英文版 年份：2011
有名字的作文 La0.6Sr0.1Te x MnO3 的粉末样品(x = 0.00， 0.05， 0.10， 0.15， 0.20 ) 与热处理用大音阶的第五音胶化方法被准备直到 1473 K。根据粉末 X 光检查衍射(XRD ) ， therm...
[期刊论文] 作者：Zhang Wenjun,Li Yanfeng,Tang J,
来源：矿业科学技术学报：英文版 年份：2012
The nature of the slurry from the stone-crushing and sand-making processes is analyzed to develop a novel separation process.The process comprises hydro-cyclone...
[期刊论文] 作者：LI Yanfeng,JI Denghui,ZHAO Zhi,
来源：稀有金属（英文版） 年份：2004
Powder samples with nominal composition LaSrTeMnO (x = 0.00, 0.05, 0.10, 0.15, 0.20) were prepared using the sol-gel method with thermal treatment up to 1473 K....
Mesozoic-Cenozoic Multi-Stage Intraplate Deformation Events in the Langshan Region and their Tectoni
[期刊论文] 作者：ZHANG Jin,LI Jinyi,LI Yanfeng,,
来源：地质学报（英文版） 年份：2004
...
[期刊论文] 作者：ZHAO Han,LI Yanfeng,DONG Yude,
来源：武汉理工大学学报 年份：2004
Computer supported collaborative design(CSCD) technology has been applied extensively with intensive market competition. The key technologies and problems of CS...
[期刊论文] 作者：LI Yanfeng,JI Denghui,LIU Shao,
来源：稀有金属（英文版） 年份：2004
The fact that there are Mn2+ at the A sites in the ABO3 perovskite phase of manganites with the nominal composition La0.6-xNdxSr0.1MnO3 showed by detailed exper...
[期刊论文] 作者：LI Yanfeng,MI Xujun,GAO Baodon,
来源：稀有金属（英文版） 年份：2004
The effects of thermomechanical cycling on the shape memory behavior and transformation temperatures of a Ni50.2Ti49.8 alloy under a constant applied stress of...
Extraction and Separation of Rare Earths from Nitrate Medium by Mixtures of p-Phosphorylated Calixar
[期刊论文] 作者：Youcai Lu,Yanling Li,Yanfeng B,
来源：黑龙江科技学院学报 年份：2014
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...
Discretization Algorithm Based on Particle Swarm Optimization and Its Application in Attributes Redu
[期刊论文] 作者：ZHENG Bo,LI Yanfeng,FU Guozhong,
来源：上海交通大学学报（英文版） 年份：2018
In order to increase the fault diagnosis efficiency and make the fault data mining be realized,the decision table containing numerical attributes must be discre...
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