三次

Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.

首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。

Along with the development of socialist constitution, China gradually gets rid of Soviet constitution's defects in content and structure, and draws a complete 1982 constitution with three amendments, and thus strengthens socialist democratic legality and contributes to China's constitutionalist dev...

随着社会主义宪法的发展，我国逐步摆脱了苏联宪法在内容和结构上的缺陷，制定了较完备的 1 982年宪法并进行了三次修改，加强了社会主义民主法制建设，促进了我国的宪政建设

Only the most honored could expect a third consulship .

只有最受尊敬的人物可以有担任三次执政官的期望。

The Third Session of the First National Committee of our People's Political Consultative Conference is now open .

我们的人民政治协商会议第一届全国委员会第三次会议，现在开会了。

The results indicated:① In general,the changes of soil moisture conte...

用SPSS统计软件进一步对土壤水分与土层深度的关系进行拟合，结果表明土壤水分与土层深度的关系具有极强的相关性，其关系方程为拟和三次抛物线型。

The cubic interpolation polynomial is got firstly in the given sub-range of the hydrophone's sensitivity-frequency curve by using the Akima curve smoothed algorithm, and the maximum of the polynomial is calculated in the sub-range by using the one dimension extreme value continued fraction algorithm, finally the frequency of the hydrophone is got.

频率测试是在灵敏度详细测试的基础上，采用阿克玛曲线光滑算法求出检波器幅频特性曲线在给定子区间上的三次插值多项式，再利用一维极值连分式法求出该区间上多项式的极值，从而求出检波器的频率值。

According to the hypothesis of continuum, a tube with the corner strengthened is gained to make an equal of the frame-tube. B3-spline functions and parabola functions are applied to simulate the displacement functions of the frame-tube. The system of equations about the undetermined coefficients of displacement functions is deduced by using energy-variational principle, by solving which the displacement of the frame-tube is gained. Then the internal forces in the columns and beams of the former frame-tube are obtained according to the principles of elasticity mechanics.

根据连续化假设将框筒等效为角部加强筒体，将三次样条函数与抛物线函数结合假定框筒的位移函数，运用能量变分原理推导出了关于位移函数待定系数的方程组，解得位移函数待定系数进而解得框筒的位移，再根据弹性力学原理确定原框筒中梁柱的内力。

We consider the cubic Hermite-Pade approximation and give the contour integral representations of coefficient polynomials.

研究了三次Hermite-Pade逼近系数多项式的围道积分表示，利用鞍点法得到了这些多项式的渐近估计。

John XXIII is summoned for the third time, he is accused of contumacy and is suspended from the papacy.

约翰二十三世，是传唤，为第三次，他被指控contumacy ，并暂停从教皇。

On all three of his DPT shots he had a convulsion in the presence of the pediatrician.

在所有的三次DPT注射的时候，她儿子都当着儿科医生的面发生了抽搐。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。