矢

The SSD of ossicles showed the malleus, incus, stapes, malleoincudial joint, and incuostapedial joint clearly.

结果 高分辨率CT清晰地显示了耳部微小病灶，明确了病变范围与周围结构的关系，听小骨的SSD对锤骨、砧骨、橙骨、锤砧关节、砧镫关节的显示有着极高的逼真性，颞骨矢状斜位极好地显示了面神经的破坏部位，为临床制定手术方案提供了有力的影像学依据。

For the existence of the specific weaknesses of the child should also have carried out random training and induction.

针对孩子存在的具体弱点，还应该有放矢地进行锻炼和诱导。

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热，物理损伤和环境影响，也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先，对微带天线技术和理论作了全面的综述然后，发展了两种分析方法，称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术，它利用谱域导抗法来求得分层媒质的并矢格林函数，并得出方向图、方向性系数、增益等参数的完整的闭式公式，给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比，它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率，由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙，并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用，介绍了一个4×4元矩形贴片天线阵的设计和分析。

From the Maxwell equation in EMT sensing subsystem, two kinds of 3D electromagnetic integral solutions are obtained under material field distribution and with Dyadic Green function as integral kernel.

从EMT传感子系统的Maxwell方程出发，得到了两类物场分布情况下的以并矢格林函数为积分核的三维电磁积分解。

Objective: The bridging veins emptying into superior sagittal sinus was observed by microanatomy and imageology, and then compared, to provide a basis for the preservation of the bridging veins during the interhemispheric approaches.

目的：通过对上矢状窦旁大脑桥静脉的显微解剖、影像学观察及其对照研究，为各种纵裂间手术入路中桥静脉的保护提供基础。

The entering point was nut localized precisely on the venograms. Conclusion: Knowledge of venous anatomy and venogram can avoid the injury to bridging veins in the interhemispheric approaches.

熟悉和比较仁矢状窦旁桥静脉的解剖学和影像学特征有利于各种纵裂间手术入路和手术过程中桥静脉的保护。

Interpretability is enhanced by ealuating axial, sagittal, and coronal projections (73) and with 3-T magnets.

应用3-T磁场结合轴位，矢状位和冠状位成像提高了图象质量。

Because of its unnerving irreversibility, entropy has been called the arrow of time

由于其令人心衰力竭的不可逆转性，熵一直被人们称做时间之矢。

Sagittal reconstruction can completely display the isthmus of vertebral arch and the features of spondylolysis in detail.

矢状位重建可清晰的显示椎弓和椎弓峡部裂的形态特征。

Key words: analytical mechanics; event space; variable mass; nonholonomic constraint; principle of Jourdain; Noether′s theorem

考虑N个质点组成的系统，其中每个质点的质量mi(i=1，…，N)是时间、位置、速度的函数， i为第i个质点mi的位矢。

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。