动力学

Sheldon: Look at the beta function of quantum chromodynamics.

看看量子色动力学的贝塔函数。

A 7 degrees of freedom dynamic equation of helical bevel gear system with clearance was developed.

建立了含间隙的7自由度螺旋锥齿轮动力学方程，结合分岔图和最大Lyapunov指数曲线研究了分岔的演化过程及系统参数对系统分岔和混沌行为的影响。

Therefore, both the theoretical research and the practical application, it is very necessary to establish the basic theory of non-linear dynamics of spiral bevel gears and hypoid gear drives.

对于齿轮系统动力学的研究，不但可以分析和预测齿轮系统的振动和噪声，而且反过来也对齿轮的设计和加工提出了新的要求。

The gear tooth flank form is a very important factor to dynamic performance of spiral bevel gears.

螺旋锥齿轮的实际齿面形状是影响其动力学性能的一个非常重要的因素。

The evolution of flow patterns are presented at different interaction stages and the bifurcate shock waves , distorted flame fronts and induced vortices are discussed according to the calculated results.

基于带化学反应的Navier Stokes方程和有关的热力学和反应动力学数据，利用改进的VLS格式，对甲烷空气混合物中激波与火焰的相互作用进行了数值模拟。

Secondly, from the angle of the nonlinear dynamics, the existence and convergence of fixed point and the bifurcation and chaos during the iterative turbo decoding process are discussed.

其次，基于非线性动力学的角度，研究了Turbo码迭代译码过程中不动点的存在性和收敛性。

The formulas for calculating the bifurcation ratios and the way to determine the location of bifurcation point were presented.

进行血液动力学模拟和血液传热计算需要先建立血管网络，为此，借鉴强制结构优化方法，提出了基于分支法则、Poiseuille＇s law及质量守恒原则，直接在模拟区域上生成动脉血管树的新方法及相应的半径比计算公式和分支点确定步骤。

The Gensio system＇s fixed point and its bifurcation behavior are studied, and the criteria of the stability of the fixed point and the system＇s bifurcation are achieved.

研究了Gensio系统平衡点的稳定性、分岔的动力学行为；得到了平衡点稳定性和系统分岔的判别条件。

Comparing with deterministic system, the point of bifurcation in stochastic Duffing-van der Pol system is moved as increasing the intensity of random parameter.

进一步的推广证实正交多项式逼近法在实际问题中有广阔的应用前景，它可以解决含有多个随机参数的非线性随机动力学系统的分岔问题。

These results reveal the complexity of global dynamical behavior in the whole parameter plane of bimodal systems.

这些结果揭示出双峰系统的整个参数平面上整体动力学行为的复杂性。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。