三次

Bifurcations of limit cycles of a cubic Kolmogorov s system are investigated at the positive equilibrium point .

研究了一类三次Kolmogorov系统在正平衡点处的极限环分支问题。

The dynamics behaviors of a relative-rotation nonlinear dynamics system with cubic coupled terms are studied.

研究了一类含三次非线性耦合项的相对转动非线性动力系统的动力学行为。

Chapter 4 investigates the number and distributions of limit cycles for a class of Kukles system, which also can be regarded as a class of reduced Kukles system under cubic perturbation.

第四章研究了一类Kukles系统的极限环的个数与分布，这里我们把所研究系统看作是三次扰动下的退化的Kukles系统。

A diamond is a form of carbon that crystallizes in the crystal system of highest symmetry known as the cubic system born hundreds of miles underneath the surface of the earth.

钻石是一种形式的碳晶体，在晶体系统最高对称性称为三次系统诞生数百英里底下的地球表面。

This system uses a cubic phase element and digital image processing to increase the depth of focus in keeping the same illumination and resolution.

设计了一个光学/数字成像系统，该成像系统利用三次位相元件辅以数字图像处理技术，在保持系统光通量及分辨率不变的前提下，提高了光学系统焦深。

The integrability conditions and coefficient conditions for the appearance of 5 and 6 limit cycles from the neighborhood of the equator are obtained. An example of cubic system with 6 limit cycles bifurcating from the equator is given for the first time.

同时计算出系统的前6个赤道环量，得到了系统在赤道邻域的可积性条件及在赤道附近分支出5个和6个极限环的系数条件，从而首次给出了一个平面三次系统在赤道附近分支出6个极限环的计算实例。

He came home just in time to hear the cuckoo clock cuckoo three times.

他回到家的时候恰好听到咕咕钟叫了三次。

It is the third cull in nine months.

这是九个月来的第三次宰杀活动。

To"avoid overgeneralization"as promoted by Culler, we explore his critical ideas in terms of both form (referring to the pivotal anchoring points and its characteristics of Culler's literary studies and criticism) and content (his three transformations in thinking and keyword studies).

本论文从卡勒思想史这个角度出发，遵循卡勒所提倡的"避免过度简化"的原则，从形式层面(基本学术思路、文学研究特色)、实体层面(三次转型思考、关键词溯源研究)这两个层面来立体把握其学术思想，并勾勒其在文学思想史的地位。

A 2D harmonic model based on the quaternion was constructed,and a special four-order cumulant was defined.

构造了合适的基于四元数的二维谐波模型，根据此模型定义了特殊的四阶累积量切片，分析了加性高斯在有色噪声中的二维三次非线性相位耦合。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。