正交轴

The transformation relationship from the screw axial section to its orthogonal projection and the compensation are given.

本方法的特点是不需要将丝杆抬起升角角度就可实现测量，给出了在螺纹轴截面和正交投影间基准转换的关系式，并以此讨论分析了补偿量。

Introduced the linear uncertainty propagator and derived how one finds the directions at initial time that evolve into the directions of the principal axes of the final time ellipse, and proved that the initial time directions form an orthonormal basis.

介绍线性不确定传播子，推导其如何得到起始时刻的方向，并且这个方向会演变成最终时刻椭圆的主要轴的方向。证明起始时刻的方向构成了标准正交基底。

Thus a simple method is proposed for determining the value of reference node coordinate, that is to derive the cross-point of coordinate equation of Y, which represents the principal inertia plane and the one perpendicular to the other plane.

为此提出了一种参考节点坐标值的简易确定方法，即通过求解代表主惯性平面和与主惯性平面正交的另一平面同Y轴的交点坐标方程，根据抽油机支架上角钢的结构方式，取代数值较大的一个即可确定参考节点的位置。

This paper present the main principle of a four axes quadrature decoder and counter card based on PCI bus.

介绍了一种基于PCI总线的四轴正交解码器和计数器卡的结构和基本原理。

And by using the initial conditions as well as the end conditions, the dynamic problem is then transferred to a second kind Volterra integral equation about the function of the axial strain with respect to time which can also be solved successfully by the interpolation method. For piezoelectric and pyroelectric hollow cylinders, by following the solving procedure for elastic hollow cylinder and by using the electric boundary conditions, the dynamic problems are transferred to two Volterra integral equations about two functions of time, one is axial strain and the other is related to electric displacement, which can also be solved efficiently and quickly by employing interpolation method. The elastodynamic solutions of hollow spheres, which are made of elastic, piezoelectric and pyroelectric materials, respectively, for spherically symmetric problems are also obtained.

对于弹性空心圆柱，通过引入一特定函数将非齐次边界条件化为齐次边界条件，然后利用正交展开技术，导出关于时间函数的方程，再结合初始条件和端部边界条件，将原问题转化为关于一个时间函数的第二类Volterra积分方程，运用插值法可给出此积分方程的解；对于压电和热释电空心圆柱，利用求解弹性空心圆柱相似的方法，再结合电学边界条件，原问题转化为关于两个时间函数（轴向应变和与电位移有关的函数）的第二类Volterra积分方程组，同样可用插值法来构造相应的递推公式高效地求解此积分方程组。

The study has also shown that there is a rotation angle for azimuthally NMO velocity ellipses in monoclinic media which different form HTI and orthorhombic media. The rotation angles of NMO ellipses are related to the property of fracture infill, fracture density ratio and the angle between the two fractures. These research results can be used to identify the type of fractured media and the property of fracture infill.

同时，研究表明对于裂隙型单斜各向异性介质，其方位NMO速度椭圆轴向并不象HTI介质和正交介质中的那样与自然坐标系的坐标轴一致，而是发生了一定角度的偏离，其大小与裂隙填充物的性质、两组裂隙密度的比值及裂隙间的夹角等因素有关，研究结果为进一步区分裂隙介质的类型及裂隙填充物的性质提供依据。

The study has also shown that there is a rotation angle for azimuthally NMO velocity ellipses in monoclinic media which different form HTI and orthorhombic media. The rotation angles of NMO ellipses are related to the property of fracture infill, fracture density ratio and the angle between the two fractures.

同时，研究表明对于裂隙型单斜各向异性介质，其方位NMO速度椭圆轴向并不象HTI介质和正交介质中的那样与自然坐标系的坐标轴一致，而是发生了一定角度的偏离，其大小与裂隙填充物的性质、两组裂隙密度的比值及裂隙间的夹角等因素有关，研究结果为进一步区分裂隙介质的类型及裂隙填充物的性质提供依据。

In this program, the declining segment of the stress-strain relation of the concrete, the restriction effect of hooped reinforcement and the bond-slip problem of the reinforcement are considered, as the same time the optimized arithmetic is applied to accelerate calculation procedure. Though the appropriate experiment arrangement, the influential factor such as the strength of concrete, the ratio of hooped reinforcement, the ratio of axial compression and the loading angle are researched, some available rules of carrying ability and ductility of the special-shaped column can be attained.

程序中考虑了混凝土应力应变曲线的下降段及箍筋对混凝土的约束影响，采用了合适的算法加速计算过程并考虑了纵筋锚固滑移的影响，通过正交试验分析了混凝土强度、体积配箍率、轴压比和荷载角对异形柱截面抗弯承载能力及截面曲率延性比的影响。

Based on experimental investigation on strength, deformation and failure mode of concrete under multiaxial stress states, a nonlinear elastic orthotropic constitutive model is proposed.

根据对混凝土多轴应力下强度、变形和破坏形态的大量试验研究，建立了非线弹性正交异性本构模型。

Through poising seismic records in the direction of space, this method avoids the assumption that multiple events are orthogonal to the primary events.

该方法通过在空间方向上对地震记录进行均衡，避免了多次波和一次波同相轴正交的假设条件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。