中心体

Methods:60 patients were divided into two groups a fixed way, a group of 30 cases of the use of vacuum bag is fixed, another group of 30 cases with thoraco-abdominal low-temperature thermoplastic membrane fixation techniques were compared focal point shifting.

将60例患者固定方式分为两组，一组30例使用真空负压袋固定，另一组30例采用胸腹低温热塑体膜固定技术，比较两组中心点移位情况。

In this paper, experimental researches and computer simulations are presented on dynamics behaviors of free-free tubes laterally impacted by flat-nosed cylindrical missiles at the middle of their spans.

本文主要对自由圆管在其中心部位经受刚性、平头弹体侧向冲击时的动力学行为进行了实验研究和计算机仿真。

In the coordination polymer,with the formates as space linkers,two types of copper centers are joined together to form three-dimensional frameworks.

在该配位聚合物中，通过甲酸根作为连接配体将两种铜配位中心连接起来形成三维网状框架结构。

The achievement have get shows that oil and gas favorite area is mainly controlled by intricate and linked river channel of Fu-Yang oil formation, the more nearer to sag center the more requirement to reservoir layer .

已有研究成果表明究油气富集主要受扶杨油层错叠连片的河道砂体规模控制，越是靠近凹陷中心，对储层的要求越高。

On National Love Your Body Day, the windows of the Yale Women's Center are covered and members are placed at the doors to prevent gawkers.

在全国性的爱体日那一天，耶鲁女性中心的窗户紧闭，成员们会守在门口防止偷窥者。

Huheengeer Complex shows a concentric zone in rock distribution: hornblende-peridotite, hornblende-gabbro and diorite from the core to margin successively in Bayan Obo Region, Inner Mongolia.

白云鄂博地区白音珠日和苏木以南呼和恩格尔附近出露的杂岩体，由中心向外依次出现角闪橄榄岩、角闪辉长岩和闪长岩，具有环状分布的特征，并以闪长岩为主。

The number of optical isomers is 2n, where n is the number of asymmetric centers.

光学异构体的数量是2 n，在此n是不对称中心的数量。

Our investigation has shown that:ⅰ there was an interference effect between the incident and reflected matter waves as all the atoms in BECs were coherent;ⅱ considering the rotation of a vortex, the nonuniform velocity distribution along the surface would play an important role in the quantum reflection process. For example, they would change the characteristics of the interference fringes between the incident and reflected matter waves;ⅲ the reflected vortex became unstable for sufficiently low incident velocity or strong interaction. This sort of instability physically originated from dynamics excitations induced by the atomic interaction in the quantum reflection process.

我们的研究表明：ⅰ由于相干性质的存在，在涡旋与固体表面相互作用的过程中，被固体表面反射回去的部分与正在入射的部分在空间叠加后一定会产生清晰的干涉条纹；ⅱ由于各向异性的速度分布，涡旋的反射率也呈各向异性，因此反射回来的部分与入射部分形成的干涉条纹宽度以及疏密程度与入射速度以及速度各向异性的程度有关；ⅲ由于玻色凝聚体中原子间相互作用的存在，反射过程中凝聚体会产生激发，破坏涡旋的结构，使得反射后的涡旋不再是中心对称。

It is suggested that surgeons may insert the fusion cage at the center of the mid-line of vertebrae as anterior as possible in the transforaminal lumbar interbody fusion.

综观以上的讨论，建议临床医师於腰椎椎间融合手术时尽可能将椎间融合器之几何中心置於椎体之中线上，且可将椎间融合器往前推进，对於椎间融合术后的稳定会有更佳的效果。

This study served as a basic research for resistance breeding,a study of factors which infleunced the growth of myceliuni of Phytophthora sojae and its zoospores production was carried out basedon R25 of? sojae.

本文围绕抗病育种这一中心，以大豆疫霉根腐病病原菌25号生理小种，对影响其菌丝体生长和游动孢子产生的因子进行了研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。