向后的

In addition, spermiogenesis includes chromatin condensation, migration of the cytoplasm and mitochondria to the caudal pole of the nucleus, formation of a moderate axial nuclear fossa containing the proximal centriole and part of the distal centriole and presence of a short cytoplasmic canal separating mitochondria from the flagellum.

另外，精子发生过程中还包括染色质浓缩，细胞质和线粒体向细胞核的尾端迁移，在核的后端中轴位置上形成中等大小的核后凹，近端中心粒和远端中心粒的一部分嵌在核后凹之内，短的胞质内陷管将线粒体与鞭毛分隔开。

Then, the differential equations are solved by the Fourier expanding and Hankel integral transform method. Integral solutions of soil skeleton displacements and pore pressure as well as the total stresses for poroelastic media are obtained. Furthermore, a systematic study on Lamb's problems in transversely isotropic saturated half-space is performed. Integral solutions for surface radial, vertical and tangentical displacements are obtained both in the case of drained surface and in the case of undrained surface excited by vertical and tangentical harmonic resources respectively. Numerical results show the obvious difference between the model of isotropic saturated poroelastic media and that of transversely isotropic saturated poroelastic media.

其次，基于Biot波动理论，在圆柱坐标系下求解了横观各向同性饱和土的Biot波动方程：通过引入位移函数，在圆柱坐标系下将横观各向同性饱和土的Biot波动方程转化为两个解耦的6阶和2阶控制方程，然后根据方位角的Fourier展开和径向Hankel变换，求解波动方程，得到以土骨架位移和孔隙水压力为基本未知量的积分形式一般解，并用一般解给出了饱和土总应力分量的表达式；再以基本解为基础，系统地研究了横观各向同性饱和半空间体的Lamb问题，考虑表面排水或不排水两种情况后，首次得到横观各向同性饱和半空间体在表面竖向和水平谐振力作用的下径向、竖向和周向位移的解析解。

In addition, retractable rear headrests and rear three quarter lights increase rearward visibility.

此外，伸缩后头枕和后三个季度的灯向后增加能见度。

In this paper,a new algorithm is given by means of the complexification of the knots,i.e. the node in the plane is considered as a complex point,the vector as a complex vector,and then based on the construction of vector valued Thiele type rational interpolants and the backward three term recurrence relation for vector valued continued fractions,the recursive algorithm is obtained by appropriate transformation.

文章利用插值型值点复数化的方法讨论并给出了二元向量值有理插值的一种新算法，即把平面上的插值结点视为一个复数，所对应的向量视为一个复向量，使用一元Thiele型向量值有理插值公式的构造方法和向量连分式的向后三项递推关系式以及适当的变换，最后导出了这种递推算法。

One line from inferior edge of anteroinferior iliac spine to the crossing point of posterior gluteal line and posterior iliac crest was defined as A line, which was parallel to the Chiotic line (the crossing point of Chiotic line and posterior iliac crest called CLIC point).

设定髂前下棘下缘向后经过臀后线与骼嵴后部交叉点的连线截面为A线截面，此线与Chiotic线平行（Chiotic线与髂嵴后部交叉点称为CLIC点）。

Objective: To compare the ability of three different reconstructions in restricting the posterior displacement of tibia and restoring anteroposterior stability to a knee from 0° to 120° flexion.

目的：研究双束股骨双隧道重建后交叉韧带法限制胫骨后移、恢复膝关节后向稳定性的能力，并与单束重建法进行对比。

Methods The gastral wedge of a relatively small width was rotated to the middle of the posterior wall of gastral wedge,the gastroduodenal anastomosis is approximated in Billroth Ⅰ method.175 consecutive patients were treated in this method.Results Less postoperative complications were recorded.

175例胃大部切除术后患者采用胃十二指肠小吻合口，小弯侧瓣向后旋转，使残胃小弯侧瓣口成为后壁之中点，残胃与十二指肠对端吻合的方法。

As there is no muscle or ligament present, the posterior palatal seal is placed through the centre of the deepest part of the hamular notch.

颊沟向后止于翼上颌切迹，位于上颌结节和翼钩之间，它也是基托在此区域的后界。

But when she took it away, back it would drop again.

但她把手移开后，我的头就又向后仰去。

In order to play a role in the Global Positioning System, Cameroon Customs developed a series of special rules: General Administration of Customs cargo in transit to obtain the permission of the goods must be installed on transport vehicles in the monitor display, and in strict accordance with the designated route transit shipment of goods in the cargo clearance in Cameroon may not stay more than 20 days, we must and can only be designated by the Customs checkpoint stop, can not break in Douala or Yaounde stopped in transit to reach destination in 20 minutes after the monitor display will be returned to the Customs and Excise Department ; in case of accident or failure of freight vehicles are not required to comply with the norms, but as soon as possible to the recent report of the customs checkpoint.

为使全球定位系统发挥作用，喀麦隆海关特别制定了一系列规则：货运方在海关总署获得货物中转许可后必须在运输车辆上安装监控显示器，并严格按照货物中转指定路线运货，在货物出港后在喀麦隆境内停留的时间不得超过20天，必须并且只能在指定的海关检查点停歇，不能在杜阿拉或者雅温得休停，在到达中转目的地后必须在20分钟内将监控显示器交还给海关；如遇到交通事故或者运货车辆出现故障，则无需遵守上述规范，但必须尽快向最近的海关检查点报告。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。