自由度

Dynamic reliability under Littlewood-Paley wavelet is the biggest, dynamic reliability under modified meyerwavelet and harmonic wavelet are close. Analyzing the dynamic reliability of structure under odd exponent wavelet is very simple, it doesnt calculate Power Spectral Density function integral, it is only to calculate the square of displacement standard deviation and the square of velocity, then the dynamic reliability of structure can be concluded by max distribution. In addition the effects of upper limit is considered, when upper limit is smaller, the dynamic reliability of structure is less, that is, the damage possibility is bigger.

通过结构地震反应在小波基下的动力可靠性分析说明：无论是单自由度还是多自由度从理论上推导在这四种小波下的结构动力可靠性是可行的，而且考虑的结构地震反应都是非平稳的高斯过程，方法实现也比较容易；在Littlewood—Paley小波基下求得的结构的动力可靠度比较大，由改造的meyer小波和谐波小波求得的动力可靠度略有差异；单边指数小波下的结构动力可靠性分析非常简单，不用求功率谱函数来积分，只需求得结构地震反应的位移方差，速度方差，利用最大值分布公式就可得到结构的动力可靠时程；另外也考虑了超越界限对结构动力可靠度的影响，超越界限越小，结构的动力可靠度越小，即破坏概率越大。

Matrix stochastic processes are employed to model the characteristics of short range wireless propagation channels in the current research.

使用矩阵随机过程对短程无线信道的空时特性进行研究。以随机矩阵的列向量描述信道的仰角自由度，行向量描述信道的水平角自由度。

The problem was studied on a 2-DOF two-wheel model,which is usually used in researching into vehicle handling stability .

针对车辆操纵稳定性研究中常用的两轮二自由度模型存在的问题，提出了四轮二自由度模型，应用Matlab/Simulink对四轮模型与两轮模型进行了对比分析。

In the reference [5], the author has suggested a method of vectorial graphicalcomputation of the undamped forced vibration of the system with one degreeof freedom.

在参考文献[5]中，作者曾提出单自由度系统无阻尼强迫振动的矢量图解计算方法，本文将这方法进一步推广，应用到单自由度系统阻尼强迫振动。

Each of its 8 joints with 2-DOF was an universal coupling with "+" shape and their motion range is over ±60 degree."U" form components constructed two rotatory DOF that their rotary range was adaptive to human whist.

由两个 U形构件组成手腕的两个转动自由度，它们的运动范围与人的手腕运动范围相适应，在这个机构的工作空间内没有奇点，具有平动和转动解耦的特性，最后一个自由度是手控器手指关节的运动。

On the basis of fivebar pantograph configurations with generating similar curves, the loop augmentation method is used to synthesize the configurations of movable planar seven-bar zero-degree-of-freedom and eight-bar negative-degree-of-freedom overconstrained chains with prismatic pairs.

文中以平面五杆缩放机构为基本架构，利用其产生相似运动曲线之特性，配合回路增殖法，分别合成出自由度为0之七杆与自由度为-1之八杆可动呆链之构形。

In this paper the nonstationary vibration behavior of an unbalanced rotor system, which is assumed to be bending flexible but torsionally rigid, during acceleration or deceleration through the critical speeds is investigated. Influencing factors such as gyrascopic effects, external and internal damping, Supporting mass, damping and stiffness, asymmetry of the shaft crass section as well as anisotropy of the supports are considered.

在理论分析方面，本文考虑了转子的陀螺效应，内外阻尼，轴截面的非对称性，支承的貭量、阻尼、刚度和支承的各向异性等因素的影响，使用分析动力学，建立起严格的运动方程，并考虑了弯曲自由度与转动自由度间的耦合，因而能较精确地分析和描述转子通过临界点时的非定常振动和转速变化規律。

These passive joints have more translational and rotational degree of freedom in most cases.

这些被动的关节在大多数情况下都具有更多滑移自由度和转动自由度。

Since the force change during operation must be sensed more sensitively, stiffness of micro manipulator and force sensors must be repartitioned properly. The micromanipulation system developed is introduced in detail, including the working principle of micro gripper, micro vision system and micro force system.

基于上述原则，研制出具有宏微运动能力的双手结构微操作机器人系统，包括六自由度步进电机驱动宏动机器人、三自由度智能微操作手、微夹持器、显微视觉监视系统和微力觉系统。

The system of drive are all driven by stepping motors.the machine system design includes every free degrees,computation of drive and transmission system .the third and four degree of freedom are performed by the feed screw having the spline of ball bearing which is design specially for robot .with the textual study,it can be believe the user will have an overall understanding to the way of thinking and steps of the machine system.

在机械系统设计上，对每个自由度驱动、传动系统进行了计算与校核，其中第三四自由度有专为机器人设计的带滚珠花键的丝杠来实现。通过本文的学习，相信使用者会对它的机械系统设计的步骤和方法有一定的了解。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。