三轴的

As the equation of the curve determined by companion centers shows, our main result is that the set of all companion centers of a nonisosceles triangle is the unique equilateral hyperbola, called the hyperbola of , passing through the vertices ,, and the barycenter of .

透过伴心轨迹方程式我们得到主要结果如下：非等腰三角形的伴心所成的集合是一个通过三顶点、、及重心唯一的等轴双曲线，称为的双曲线。

George Daniel's co-axial escapement, doesn't have the advantage of over 20 years worth of use, abuse and refinement, so it's still an open question as to its long term reliability.

但与前两个动作，后者一个，尽管这是他们的第三代博士乔治丹尼尔的同轴擒纵，不具备的优势，超过20年价值的使用，滥用和完善，所以它还是一个开放的问题，其长期的可靠性。

On the basis of theoretical analysis of digital holography, the preliminary study carries out through computer simulation and experiments. The main work is as follows:Firstly, on the basis of off-axis Fresnel diffraction, the principles of optical holography and digital holography are introduced. Besides, the theories such as recording digital hologram, numerical reconstruction and the related digital image processing methods are analyzed.

本论文从理论分析、计算机仿真和实验三个方面对数字全息技术进行了初步的研究，主要完成了以下工作：首先，介绍了传统的光学全息术和数字全息技术的基本原理，以离轴菲涅耳全息为例对数字全息的记录条件、数值重现算法、以及相关的数字图像处理方法进行了详尽的理论分析。

American Huixin straight teeth casting ladle, brake inside the gear box, hard make and difficult to maintain; it's nut gear of the hand wheel, with three radial direction space accumulate, difficult to ensure accuracy; while circular motion, it's shaft direction moving, gear have friction slidding, easy agglutination.

美国回信的直齿浇包，制动器在齿轮箱里面，难制作难维修；他的手轮轴上的螺母齿轮，有三处径向间隙累加，难保证精度；在园周运动的同时，有轴向移动，齿轮有摩擦滑动，易胶合。

Yesterday, Xiamen, Zhangzhou and Longyan three cities signed the Tourism Bureau, entitled "Declaration on Tourism Cooperation Yunding" regional tourism cooperation agreement, marking to Xiamen as a leader, to Xiamen Zhangzhou Liuzhou highway to the axis of one half hour economic circle tourism framework初显and west side of the Straits economic zone is expected to become the most attractive, the most well-known, the most potential for development of tourism economy strong district.

昨天，厦门，漳州，龙岩三市旅游局签署了题为"关于旅游合作云顶"区域旅游合作协议，这标志着以厦门为龙头，以厦门漳州柳州高速公路的轴半小时经济圈旅游框架初显和海峡西岸经济区有望成为最有吸引力的，最有名的，最有潜力的旅游经济发展的强有力的地区。

Based on the three dimensional viscoelastic integral constitutive relation of a propellant grain with the finite element method, the analysis about the thermo-viscoelasticity of solid propulsive agent column is presented.

基于药柱的三维线性热粘弹性积分本构关系，采用有限元法，对固体火箭推进剂药柱进行热粘弹性有限元分析，得出药柱在轴向过载作用下的变形结果和药柱内危险部位的位置，表明药柱具有明显的粘弹性特点。

This paper researches the part third-order contact condition of tool and the surfaces by the contact principle of deferential geometry in to the 5-axis NC machining and analyzes the contact degree of the intersection line of the cutter and the surfaces.

运用微分几何中的切触原理，研究了在多轴数控机床中铣刀铣削圆与零件曲面的切触条件和局部坐标系下的局部三阶切触条件，并用截形对铣刀铣削圆与曲面的贴近程度进行了分析。

One of three mutually perpendicular lines that define the orientation of an aircraft,with one being along its direction of travel and the other two being perpendicular to the direction of travel.

导向轴决定飞机方位的三条相互垂直线中的一条，一条沿着飞行的方向，其它两条垂直于飞行的方向

The dynamic stability of the shell under axial compression is analyzed qualitatively by the linear equation of motion. There are three kinds of equilibrium state with different value dynamic parameter. They are stable,neutral and unstable equilibrium respectively.

利用线性的运动方程对轴压圆柱壳稳定性进行了定性分析，依动力学参数取值范围的不同，方程的解有稳定平衡、中性平衡和不稳定平衡三种情况，并给出了动力学参数与载荷参数之间的依赖关系。

They are stable,neutral and unstable equilibrium respectively. Next for a simply supported shell the relation between dynamic parameter and load parameter is given. damping and external forcing are introduced into the nonlinear equation of motion.

利用线性的运动方程对轴压圆柱壳稳定性进行了定性分析，依动力学参数取值范围的不同，方程的解有稳定平衡、中性平衡和不稳定平衡三种情况，并给出了动力学参数与载荷参数之间的依赖关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。