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[期刊论文] 作者：CHEN Shu-han,YAN Hong-zhi,MING,
来源：中南工业大学学报（英文版） 年份：2004
Six-axis numerical control spiral bevel gear grinder was taken as the object, multi-body system theory and Denavit-Hartenberg homogeneous transformed matrix (HT...
Tooth surface geometry optimization of spiral bevel and hypoid gears generated by duplex helical met
[期刊论文] 作者：ZHANG Yu,YAN Hong-zhi,ZENG Tao,ZENG Yi-yu,
来源：中南大学学报（英文版） 年份：2016
In order to effectively improve meshing performance of spiral bevel and hypoid gears generated by the duplex helical method, the effects of straight lined and c...
Nitrogen Nutrition Index and Its Relationship with N Use Efficiency, Tuber Yield, Radiation Use Effi
[期刊论文] 作者：HU Da-wei,SUN Zhou-ping,LI Tian-lai,YAN Hong-zhi,ZHANG Hua,,
来源：Journal of Integrative Agriculture 年份：2014
Knowledge about crop growth processes in relation to N limitation is necessary to optimize N management in farming system. Plant-based diagnostic method, for instance nitrogen nutrition index(NNI) wer...
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