By using Mel nikov functions,for the Poincare bifurcation problems of quadratic Hamiltonian system under cubic perturbation with one center and the periodic regions,which has a parabola and an invariant straight line as it s bounding.
利用Mel’nikov函数,对一类具有以抛物线与直线为边界的周期环域的单中心二次Hamilton系统的三次扰动,分别构造出恰好存在两个单重极限环、恰好存在一个二重极限环、恰好存在一个极限环和一个分界线环的近似系统。
Bifurcation of Cubic Integrable System under Cubic Perturbation;
一类三次可积系统在三次扰动下的分支
Structure and number of zero points for a class of integrable non-Hamilton systems
一类具有三次扰动的单中心环域的可积非Hamilton系统的Abel积分
The distribution of limit cycle in a cubic system with seven-order perturbed term
一类具有七次扰动项的三次系统极限环分支
The Limit Cycles of Hamiltonian Systems Under Thrice Polynomial Perturbations;
一类在三次多项式扰动下的Hamilton系统的极限环
An Estimate of the Number of Limit Cycles of a One-parameter Cubic Hamiltonian System under Polynomial Perturbations
一类含单参数三次Hamilton系统在多项式扰动下极限环个数的估计
To disturb the order or arrangement of.
扰乱，捣乱扰动次序或安排
Perturbation Bounds for Subunitary Polar Factors of Extended Matrix under Non-preserving Perturbation
延拓矩阵在非保秩扰动下次酉极因子的扰动界
Limit cycle of Hamilton system under quadratic perturbation
一类二次Hamilton系统在二次扰动下的极限环
The fire brigade was called out three times last night.
消防队昨晚出动了三次。
The Bifurcations of Limit Cycles for a Linear System with 9-degree Perturbations;
一类线性系统在9次扰动下的极限环分支(英文)
A Method of Increasing the Number of Limit Cycle under the Same Order Disturbance;
同次扰动下增加极限环个数的一种方法
Impacts of Initial Perturbations on Prediction of a Heavy Rain in South China
初始扰动对一次华南暴雨预报的影响的研究
Measure thrice Before you cut once.
三次量布，一次剪开(周密准备才可行动)。
Study on Interactions Neighborhood Interference and Time Dynamic of Nutrient Elements among Three Forest and Grassland;
三种林草模式邻体干扰和养分时间动态研究
Research on Reactive Power Disturbance Islanding Detection of Three Phase Grid-Connected Inverter
三相并网逆变器的无功扰动孤岛检测技术研究
Simulation on passive tracking underwater target using a three unit vector-sensor-buoy-array in strong interference background
强干扰下三元矢量浮标阵被动跟踪仿真研究
BIFURCATION OF A THREE-DIMENSIONAL SYSTEM WITH PERIODIC PERTURBATION
三维系统中一族闭轨在周期扰动下的分支
Analysis and Discussion on the Electromagnetic Interference in Shisanling Seismic Station
十三陵地震中心台电磁扰动数据分析处理讨论