分析动力学

The characteristic of machined surface of high speed machining aluminum alloy 7050-T7451 is researched by micrographic experiments and analysis. The formation mechanics of machined metamorphism layer has been analyzed and studied. The dislocation-energy model in machined metamorphism layer was established and applied to explain the micrographic mechanics work-hardening using the thermo-mechanical coupling deformation theory and dislocation theory. The experimental results show that the interaction of high dislocation density effect on hardening is more remarkable than that of thermal stress in high speed machining.

利用显微观察方法对铝合金7050-T7451高速铣削加工的工件表面断面和不同深度的表层的微观形貌特征进行系统的研究，确定了高速切削加工铝合金7050-T7451的表面变质层深度为30～35μm；应用位错能量研究了高速铣削加工过程的热力耦合对变质层的影响机理，并通过微观形貌观察证明：与普通切削相比，高速铣削表层塑性变形的能量和位错密度更高；建立了位错密度的加工硬化的动力学模型，研究了加工硬化的热-力耦合形成机理；对微观裂纹的形成机理进行了理论分析，证明位错密度高的高速切削过程中较低速加工更容易产生明显的微裂纹，从分子级乃至原子级的水平进一步揭示高速切削加工表面变质层的形成特征。

By analysing the molasse sediment, tectonic stress field, thrust fault system and comparing them with volcanic rocks and granites in the region, it is showed that Dabie orogenic belt had a strong intracontinental orogenesis whose deep dynamic processes were controlled by subduction with delamination during late stage of Cretaceous period-late Cretaceous period.

磨拉石沉积、构造应力场、逆冲断层系统和区域火山岩、花岗岩的综合分析表明，大别造山带早白垩世晚期—晚白垩世存在一次强烈的陆内造山作用，其深部动力学过程受控于拆沉中的俯冲作用。

With simple calculation procedure and results easy to explain,statistics momental analysis method has potential toxicological significance in kinetics study.

因其计算方便且结果易于解释，矩分析法在动力学研究中具有潜在的意义。

The first part's researches are of the interpattern association optical neural network model.(1) The neurodynamic stability of IPA model is studied after expatiating on its principle and superiority.

第一部分是关于图样间联想光学神经网络（Interpattern Association；简称IPA）模型的研究：（1）在阐述、发展图样间联想光学神经网络模型理论及其优越性的基础上，详细分析了IPA网络的动力学稳定性。

Fermentation for Eicosapentaenoic Acid production by Nitzschia laevis at various temperature between 10℃ and 30℃ was investigated and the dynamics characteristics during fermentation process were also analyzed.

本文考察不了同温度（10℃～30℃）对硅藻合成二十碳五烯酸的影响，对不同温度下的发酵过程进行动力学特性分析。

The equations of motion for the nonlinear nonplanar flexible cantilever are derived by using the generalized Hamiltons principle. Then, the Galerkin procedure and the method of multiple scales are used to give the perturbation analysis of the system and the average equations. The three resonant cases are considered in this dissertation.

对于非线性非平面运动悬臂梁，利用广义Hamilton原理详细推导了运动微分方程，综合运用Galerkin离散方法和多尺度法对非线性非平面运动悬臂梁的动力学方程进行摄动分析，得到了三种共振情况下的平均方程。

At the same time,dynamical characters of stronglynonlinear system under nonresonant and resonant conditions is analyzed in de-tail,the frequency-response curves and stable ranges are drawn,and validity ofthis method is proved through comparison with the well-known results.

同时，详细分析了非共振和共振情况下强非线性系统的动力学性态，给出了各种不同情况下的频率响应曲线及周期解的稳定区域，并通过与现有的众所周知的结果的比较，表明了映射迭代法的正确性及实用性。

Over the past two decades, there have been several approximate methods that adopt different mutation models and used for estimating nonsynonymous and synonymous substitution rates based on protein-coding sequences across species or even different evolutionary lineages.

比较基因组分析是研究生物进化关系的基本工具，非同义替换率和同义替换率的计算是研究分子进化动力学的重要内容。在过去的二十多年，基于马尔科夫链的核酸替代模型一直在不断发展。

Over the past two decades, there have been several approximate methods that adopt different mutation models and used for estimating nonsynonymous and synonymous substitution rates based on protein-coding sequences across species or even different evolutionary lineages.

近日，中国科学院北京基因组研究所基因组科学及信息重点实验室通过引入新的参数构造模型，发展了一个新的ka/ks算法，该研究成果在近期出版的 Biology Direct 杂志上发表。比较基因组分析是研究生物进化关系的基本工具，非同义替换率和同义替换率的计算是研究分子进化动力学的重要内容。

Based on the analysis of nosogenesis of primary open-angle glaucoma , correlate parts in the dynamic model were modified to describe the pathological state of POAG.

6根据对原发性开角型青光眼致病机理的分析，提出了一种对人眼房水动力学模型的相关环节进行修改，使其能够描述POAG病理状态的方法。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失