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This paper analyzed the firstorder statistics of receive data′s sequences and deduced a channel estimation algorithm using the property of circulant Toeplitz matrix when using PN sequences as training sequences.

从接收信号的一阶统计量入手，并且在训练序列为PN序列下，利用循环To-eplitz矩阵的特性，得到了信道估计的算法。

Special solutions for the ring circular domain with crack surfaces acted on uniform compressive force, linear compressive force and linear shearing force are deduced in polar coordinate employed the eigenfunction expansion technique in the Hamiltonian system of elastic mechanics. Combined with the general solution for the above problems, the analytical solutions for crack tip fields with surfaces acted on the above three kinds of loads are obtained. These solutions offer theoretical basis to construct analytical elements for plastic analysis of crack.

从弹性力学哈密顿体系理论出发，利用平面弹性力学极坐标系下的本征向量展开求解，推导了环形圆形域裂纹边作用有均布压力、线性压力和均布剪切力情况下的特解，从而得到了裂纹表面作用有以上三种荷载情况下的裂纹尖端场的解析解，为进一步构造进行弹塑性裂纹分析的奇异解析元奠定了理论基础。

The influence of free surface on tunnels is discussed.The influence of blasting vibration on fresh concrete lining is studied. The finite element method is employed to analyze the spatial distribution of temperature and thermal stress of fresh concrete lining, the wave function expansion method is used to study the interaction of blasting seismic wave and the circular tunnel with lining, thenthe safe PPV of fresh concrete lining with different age is decided by taking into account the thermal stress of concrete lining. Using the conformal mapping method, the influence of blasting vibration on the arch tunnel with lining is studied and the safe PPV of concrete lining is deduced under different incident angle.

研究了爆破振动对新浇混凝土衬砌的影响，采用有限元法求出了圆形洞室新浇混凝土衬砌内温度和温度应力在空间上的分布及其随时间的变化，采用波函数展开法求解了爆破地震波与有衬砌圆形洞室的相互作用，获得了考虑新浇混凝土衬砌内温度应力前提下不同龄期的新浇混凝土衬砌的安全振速；利用保角变换研究了爆破振动对直墙拱形有衬砌隧洞的影响，得到了爆破地震波以不同角度入射时混凝土衬砌的安全振速。

In this paper, a series of lunar map projection formulas are deduced including azimuthal projections, cylindrical projections and conical projections. The lunar map projections software is compiled. By caculating lunar map projection distortions, their projection distortion rules are found. Base on the lunar exploration mission, the lunar map projection scheme is given in this paper. The azimuthal conformal projection or the circumcenter perspective azimuthal projection is usually used in small areas, especially in two poles. When the whole map of the moon is needed, the azimuthal conformal projection or the circumcenter perspective azimuthal projection is used within 10° in the poles, and the traverse tangent cylindrical conformal projection or the normal secant conical conformal projection can be used in else areas, furthermore, band-division is necessary to reduce the projection distortion.

本文推导了基于月球参考球的各种投影公式，主要包括方位投影、圆柱投影和圆锥投影；编制了月球地图投影计算软件；对多种月球的投影变形进行了详细的计算，总结分析了各种月球投影的变形规律；结合月球探测的需要，给出了月球投影方案的建议：对于局部的面积较小的投影区域，建议使用等角方位投影或外心透视方位投影；如果绘制月面全图，在两极10°范围内采用等角方位投影或外心透视方位投影，其余区域可以采用等角横切圆柱投影和等角正割圆锥投影，并且要进行分带处理。

The word clef (= key in French) indicates the sign used on the staff to show the letter name and pitch of a line, from which other pitches can be deduced.

Clef这个单词（等同于法语中的"钥匙"），其用在五线谱上以表明该条线的音名及音高，其他音可在此递减。

At present, with the development of the science and technology, wind conditions can be deduced from various satellite climograph, this paper will adopt wave spectral numerical models to offer wave conditions with enough resolution and accuracy, taking into account that errors may occur during directly evaluating wave parameters from empirical formulas.

现今科技的发展使人们能从卫星气象图片计算出风场，为避免由经验公式从风场推算波高分布的误差，本文将利用波浪谱数学模型以提供具有足够分辨率和精确度的波浪场。

In this paper, the force-energy formula which is suitable for double groove ball section ring is deduced based on force-energy formula of closed rolling... of rectangular cross-section ring by using micro-element method.

本文在矩形截面环件闭式辗扩力能公式的基础上，采用微元法推导了适合双沟截面环件的辗扩力能公式。

Based on the closed time path formalism, a deduced Feynman rule for directly calculating the retarded and advanced Green functions is given.

在闭合时间路径温度场论基础上，导出了直接计算推迟和超前格林函数的一种费曼规则。

A formula of rebound distance based on coefficient of restitution was deduced through kinematic analysis of raw coal in the process of oblique-impact .

通过对斜碰撞过程中原煤球的运动分析，推导出基于碰撞恢复系数的物料块反弹距离公式。

Collis and Montgomery It can be deduced from the various partial approaches in the Resource-based View that there are different terms and classifications of resources.

你好！！ Collis和蒙加马利 It可以从在资源基于看法的各种各样的部份方法被推论有资源的不同的期限和分类。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。