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- Using DF (Describing Function) in determining the limit cycle number of differential equation is a significant analysis try. 摘要将描述函数法用于确定微分方程极限环个数的问题是一个有意义的理论探索。
- Study of Describing Function Approach on Determining Limit Cycle Number 基于描述函数法确定极限环个数问题的研究
- limit cycle number 极限环个数
- The intensity of phase transformation subsides as the cycle number increases. 且随著循环次数的增加，相变化发生的强度会降低。
- In this paper, the problem of limit cycle for a cubic system is studied. 摘要讨论三次系统(方程式略)的极限环问题。
- EMD samples have been measured by so call discharge cumulative capacity as well as charge/discharge cycle number. 样品及未掺钛的电解二氧化锰样品对比,检测其充放电循环次数及放电累积容量,以此衡量其充放电可逆性能。
- It is proved the existence of local limit cycle when there exists critical points in every invariant cylinder. 当在每个不变柱面上有奇点时证明了这类系统局部极限环的存在性；
- A kind of microbe cultivated model is discussed to verify that the limit cycle is unique in a fixed parameter range. 摘要分析了一类细菌培养模型，证明了在一定参数范围内极限环是唯一的。
- The microhardness on the surface of normalized 45 steel smooth sample was measured using micro Vickers under different cycle number during high cycle fatigue. 摘要应用显微硬度计对高周疲劳不同循环周次下正火45钢光滑圆试样进行了表面显微硬度测量。
- On the other hand, as P/E cycle number increases, significant electron trapping events occur in the FG devices, resulting in shrinkage of threshold voltage window. 在另外一方面，随著写入/抹除的次数增加，悬浮闸元件会产生重要的电子的捕捉现象而导致缩小临界电压的操作范围。
- Instability shows itself frequently in the form of limit cycles. （非线性系统）的不稳定性通常表现为极限环的形式。
- It is the first time to obtain the real railway vehicle’s limit cycle curve and Hopf bifurcation point by roller rig test in the world. 论文还介绍了试验台自1995年启用以来，所完成的新型机车车辆大型试验情况，以此说明由于有科学、合理的设计技术路线，试验台的研制非常成功，在我国高速、重载机车车辆的研制过程中发挥了重要作用。
- It is found that the frequency creep caused by superradiance usually results in this kind of limit cycle like oscillations. 分析表明这种类极限环振荡主要起因于超辐射引起的频率蠕变。
- As far as the number of limit cycles bifurcated from 3 fine focal points of quartic system is concerned, the result is good. 就三个不同细焦点分枝出极限环的结论来说，该结果是好的。
- A model in biochemical reaction asis investigated and the conditions for the stability of the only positive equmilibrium point ,exis-tence of the limit cycle are obtained. 本文研究了一类生化反应模型：得到了唯一正平衡，点的稳定性和极限环的存在性条件。
- Methods Petal's organ development, fetal position, condition of placeta and amnion in general prenengcy underwent color ultrasound examination at the same time. If there was cord entanglement in neck and cycle number of wrapping were observed. 彩超常规检查足月妊娠孕妇胎儿各器官发育及胎儿方位、胎盘、羊水等情况,同时观察是否有脐带绕颈及绕颈周数。
- CHEN Liu-juan,SUN Jian-hua.The uniqueness of a limit cycle for a class of Holling models with functional response [J].Acta Mathematica Sinica,2002,45(2):383-388. [3]陈柳娟;孙建华.;一类Holling功能性反应模型极限环的唯一类[J]
- COX regression multivariate analysis showed that IPI, the cycle number of rituximab therapy, and the clinical efficacy had significant effects on the overall survival of patients (P<0.05). COX回归模型多因素分析发现，国际预后指数评分、利妥昔单抗治疗周期数和治疗后的疗效对生存的影响有统计学意义(P<0.;05)。
- LIU Fei,YANG Yiren.Bifurcations of 2-multiple semistable limit cycle of airfoils with cubic nonlinearity[J].Journal of Southwest Jiaotong University.2004,39 (5):638-640. [6]刘菲;杨翊仁.;立方非线性机翼的二重半稳定极限环分叉[J]
- We measure the micro bubble's size distribution by N4-plus coulter and consider the probe effect made different acoustic pressure.We discuss the monitor range when input cycle number 15、20、25. 接著再依经由粒径分析仪所测得实际的粒径大小分布后考虑探头响应所造成不同的驱动声压去模拟整群的微气泡在超音波场下所造成的震荡变化。
