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Fifth, because of the influence of the gyroscopic moment, there is obvious deflection at a plate and vibration mode of the dual-rotors system rotating in the opposite direction is different from that of the dual-rotors system rotating in the same direction.

由于陀螺力矩的影响，使得反向旋转的双转子振型与同向旋转的双转子有较大区别，在高阶振型中轮盘附近会出现明显挠曲，在发动机设计中应引起重视。

The handle projects in a longitudinal direction and detachably mountable to a portion of the needle extending in an axial direction.

手柄(2)在纵向上突出，并可拆卸地安装到轴向延伸的针(1)部分(8)。

It was shown that,as the horizontal direction and vertical direction sizes of the grating increase,the diffraction efficiency of holographic grating increased.

结果表明，随着光栅的纵向和横向尺寸的增加，光栅的衍射效率也逐渐增加。

At the same time, according to the CMM operational principle and the direction cosine of geometric elements, a thought of using direction cosine to analyze the oversize geometric tolerance reasons was proposed and its relevant example was shown, which can expand the way of quality analyses and guide to produce eligible machine parts.

同时在描述三坐标测量机工作原理和几何元素方向余弦的基础上，提出了利用方向余弦进行形位公差超差原因分析的总体思路，并辅以实例，这一办法拓宽了产品质量分析手段，有助于指导制造出合格的机械零部件。

Based on the description of three-COMERO operational principle and the direction cosine of geometric element, a thought that uses direction cosine to analyze reasons of oversize geometric tolerance is advanced and relevant example is showed, which can expand the way of analyzing quality and direct to produce an eligible machine part.

在描述三坐标测量机工作原理和几何元素方向余弦的基础上，提出了利用方向余弦进行形位公差超差原因分析的总体思路，并辅以实例，拓宽了产品质量分析手段，有助于指导制造出合格的机械零部件。

The information Radon coefficient wrap-around of the line on a finite field was caused by the modular arithmetic so that the Radon coefficient information in the periodic oscillations direction was processed with discrete cosine transformation, and other direction information was processed with wavelet analysis in order to reduce the wrap-around of rebuilding information. At the same time, according to the characteristic of the noise, one kind of denoising threshold selection plan was proposed.

正交有限脊波分析处理信息时，有限域平面上的直线由于模运算的存在而引起信息Radon系数的卷绕，为此，对Radon系数周期振荡方向的信息采用离散余弦变换处理，其他方向信息采用小波分析处理，以减少卷绕对信息重建影响；同时，结合图像信息中噪声的特点，提出了一种去噪浮动阈值的选取方案。

The so called indirect integral operation means that Eular angles can be gotten from the direction cosine matrix which is received by the integral operation of quaternions or direction cosine.

飞行器导航中，姿态角的获取可以通过直接或间接的积分运算求得的，所谓间接获取即是指通过四元数或方向余弦的积分运算求得姿态矩阵，再从姿态矩阵中提取姿态角。

Direction cosine analysis based on winmeil;2. According to the directioncosine formula in hexahedron tubular hea ter,the direction cosine of energy bind in inclined and symmetry tubular heater is stuided.

分析了用蒙特卡罗法计算加热炉辐射传热时能束的发射方向和行程长度，根据六面体加热炉中能束的方向余弦公式，对斜顶对称加热炉中发射能束的方向余弦进行了研究，得到了其修正公式，对斜顶壁面相交坐标进行了修正。

The launching direction and journey length of energy bind in calcula ting the radiation heat transferring in tubular heater by method of Monte-Carlo are analysed. According to the directioncosine formula in hexahedron tubular hea ter,the direction cosine of energy bind in inclined and symmetry tubular heater is stuided.

分析了用蒙特卡罗法计算加热炉辐射传热时能束的发射方向和行程长度，根据六面体加热炉中能束的方向余弦公式，对斜顶对称加热炉中发射能束的方向余弦进行了研究，得到了其修正公式，对斜顶壁面相交坐标进行了修正。

Some also say that sleep is best along the direction of magnetic field lines, that is the best north-south direction.

也有人说，睡眠是沿磁力线方向最好的，这是最好的南北方向。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。