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1LB—40型耕耙犁动力输入系统的改进
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作者 钱炳举 《安徽农机》 2001年第2期7-8,共2页
本文针对1LB-40型耕耙犁动力输入系统结构设计所存在的缺点,探讨了以三角带、齿轮箱、万向节传动代替齿轮箱、转动长轴、万向节传动的合理性与适用性。
关键词 耕耙犁 动力输入系统 改进
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Cluster Growth Through Monomer Adsorption Processes
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作者 柯见洪 林振权 陈效双 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第2期291-297,共7页
We propose a monomer adsorption model, in which only the monomers are allowed to diffuse and adsorb onto other clusters. By means of the generalized rate equation we investigate the kinetic behavior of the system with... We propose a monomer adsorption model, in which only the monomers are allowed to diffuse and adsorb onto other clusters. By means of the generalized rate equation we investigate the kinetic behavior of the system with a special rate kernel. For the system without monomer input, the concentration aj(t) of the Aj clusters (j 〉 1) asymptotically retains a nonzero quantity, while for the system with monomer input, it decays with time and vanishes finally. We also investigate the kinetics of an interesting model with fixed-rate monomer adsorption. For the ease without monomer source, the evolution of the system will halt at a finite time; while the system evolves infinitely in time in the case with monomer source. Finally, we also suggest a connection between the fixed-rate monomer adsorption systems and growing networks. 展开更多
关键词 kinetic behavior ADSORPTION rate equation approach
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Study on How to Design Knitted Fabric Pattern with Mathematical Theory 被引量:2
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作者 陈莉 张蕊 叶介茂 《Journal of Donghua University(English Edition)》 EI CAS 2009年第2期204-206,共3页
To improve design capabilities for the knitted fabric pattern,a preliminary study is carried out for the design method.Based on mathematical theory,pattern could be created automatically by computer with inputting dif... To improve design capabilities for the knitted fabric pattern,a preliminary study is carried out for the design method.Based on mathematical theory,pattern could be created automatically by computer with inputting different parameters for mathematical functions.The knitted fabric simulation is realized by M1 CAD pattern preparation system of STOLL Company.In the pattern,different color unit is replaced by obverse stitch with different color,or by obverse stitch and reverse stitch with the same color separately,after that the effects of knitted fabrics could be simulated.Designing with this method,it would not only help to acquire a great of diversity patterns,but also improve design efficiency and save cost. 展开更多
关键词 knitted fabric mathematical theory patterndesign CAD fabric simulation
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