最小地

A detailed model of non-linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non-linearity are considered, is proposed in this paper. Based on several numeric examples investigated by the Galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. Another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived. The smallest excitation amplitude,the transient state and steady state resonance amplitudes, and the changing characteristics of the axial force are obtained by using harmonic balance method. According to numerical examples calculated by numerical integration method, the effects of the inner damping of the stay cables are investigated.

本文创新地提出了斜拉桥拉索-桥面耦合参数振动模型，推导了索-桥耦合非线性参数振动方程组，联合Galerkin法及数值积分方法，对各种特性的拉索进行了数值求解，得出了影响拉索参数振动的各种因素；提出了斜拉索受轴向端激励参数振动模型，导出了模型的非线性振动方程，使用谐波平衡法得出了产生参数振动需要的最小激励幅值、共振时瞬态及稳态的振动幅值及索拉力的变化特性，并用数值积分方法对实际斜拉桥拉索进行了计算，分析了拉索阻尼对参数振动的影响。

Also it is found that when the reflectivities of two antireflection and high-reflection coatings increase, and the stable oscillation of the master wave is established in the external cavity, the threshold current is the lowest, but the efficiency of the electro-optical conversion and the power of the output light reduce sharply.

并且发现当两端面的反射率增加，同时激射波长在外腔长度中形成稳定谐振时，激光器的阈值电流达到最小值，但相应的电光转换效率和出光功率会急剧地减小。

The article attempts to study the characters of image that have complex shape target or noise, so as to improve the traditional Snake in the energy function and operation strategy.

Kass等人1988年提出了一种基于能量函数的Activecontourmodels算法，该算法基于图像整体能量最小化目标分割，较好地解决了对特定目标精确分割问题[3]。

In Chapter 3,applying the results of the Chapter 1 and 2,we discusssystematically the bound restricting self-adjoint extensions for Sturm-Liouvilleoperator 〓,i.e.,for any constant〓,we find all the possible self-adjoint extensionsL,such that their minimal engenvalue is exactly equal to 〓.

第三章 应用前两章所发展的一般理论，更详尽地讨论Sturm-Liouville微分算子〓的限界自伴扩张（即刻画〓的所有可能自伴扩张L使L以预先给定的常数〓为最小特征值）。

Rosy-cheeked; and the youngest of the grandchildren danced around them, and called out quite delighted, that there was to be something very splendid that evening--they were all to have hot potatoes.

正在下沉的太阳照在这对老夫妇的脸上，弄得他们的双颊都泛出一阵红晕来。他们最小的孙子们围着他们跳舞，兴高采烈地叫着，说是今晚将有一个宴会——那时他们将会吃到热烘烘的土豆！

The competition between the interlayerexchange coupling and the two in-plane anisotropies leads to various kinds of spinconfigurations.

在分别具有单轴或立方面内各向异性的3种磁性双层膜中，根据自由能最小原理解析地推导出磁性层之间共线与非共线自旋排列的存在条件。

Instead of allocating several frequency bands block by block to a radiocommunication system, at least one frequency band of another radiocommunication system is arranged between the frequencies of the first and second frequency band, whereby a minimum distance is created between the frequency bands used in a location.

在频率分配的意义上讲，不是成块地给一个无线通信系统分配多个频带，而是在所述第一和第二频带的频率之间设置了其它无线通信系统的至少一个频带。于是在一个位置处使用的频带之间具有一个最小间隔。

Then, in analogy with the annealing of metals, the temperature is made high in the early stages of the process for faster minimisation or learning, then is reduced for greater stability.

然后，与金属退火原理相类似，在开始阶段为了更快地最小化或学习，温度被升得很高，然后才降温以求稳定。

The simulation results show that it provides considerable improvement than linear line of position algorithm and Taylor series algorithm.

仿真结果证明该算法比现有的线性位置线和泰勒级最小乘算法更加有效地提高了移动定位的精度。

With the implementation of CPF, fine-grain and automatic privilege control can be transparently exercised to traditional applications, threats of malicious intrusion to a system can be reduced greatly, and support to the principle of least privilege can therefore be achieved effectively.

通过CPF的实现，系统能进行细粒度的、自动的特权控制，且对应用软件完全透明，恶意入侵的危害性被大大降低，系统能有效地支持最小特权原则。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。