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By analysis of frequency spectrum based on MATLAB platform, wavelet method in the application of cutting out a section of inputting earthquake wave was presented. In the process of pseudo dynamic test results, the method of non-dimensional representation and analytic representation of hysteretic curve was provided. The above two methods will help to compare dissipation energy capacity of this structure at the different acceleration peak value stage of pseudo dynamic test more precisely and comparably.

通过基于MATLAB的地震波频谱分析，说明了小波分析方法在拟动力试验中地震波截取方面的应用：在拟动力分段试验数据的处理方面，本文将试验结果的无纲量表示方法以及曲线的多项式拟合法引入滞回曲线的数据处理，这将有助于拟动力试验不同加速度峰值条件下，各阶段结构耗能能力的客观比较。

XRD revealed that diffraction angle of 002 peak did not change obviously, while by contrast, L a and L c decreased by loading with Fe2O3, indicating decreasing degree of graphitization for microcrystalline structure of char.

由XRD可知，Fe2O3没有使得煤样半焦的002峰衍射角发生明显变化，但使 L a和 L c参数明显降低，说明半焦的微晶结构石墨化程度降低。

The modification occurred in crystal lattice and the restoration effect of annealing are discussed by analyzing the intensity, width and angle of the X-ray diffraction peaks. The H〓 concentration and related structural information are deduced by the evolution of OH〓 absorption spectra with annealing, which offers the experimental proof for further discussion on annealing. The disappearance of the OH〓 absorption peak at 3300cm〓 after annealing indicates that some H〓 of high concentration diffused further into the substrate and the crystal phase changes accordingly.

根据质子交换波导退火前后在OH〓吸收峰特征的变化，推断波导层H〓浓度及相关的结构信息，并对进一步分析退火机制提供了实验依据；由于3300cm〓〓处的吸收峰代表的是立方钙钛矿的HNbO〓结构成分，因此退火后该峰的消失确实说明高浓度区域的H〓继续向波导深度迁移的事实，同时波导区的晶相成分也发生变化。

X-ray diffraction is one of the most common and efficient ways to measure a superlattice structure. This dissertation displays the detail results for characterization of Ge〓Si〓/Si superlattices by x-ray diffraction (including x-ray small angle diffraction and double crystal diffraction). It was found, when the growth temperature is lower, the intensities of xray small angle diffraction peaks are modulated by a periodical function, which indicates that both sets of interfaces of the superlattice is highly flat; when the growth temperature is higher, the diffraction peak intensities are simply decay with the increase of diffraction vector, which indicates that one set of interfaces is highly flat but another is not; when the growth temperature is very high, the diffraction peaks are reduced more rapidly, which indicates that both sets of interfaces are not ideal.

本文详细介绍了用X-射线衍射（包括X-射线小角衍射和双晶衍射）方法对Ge〓Si〓/Si超晶格结构特性测试的结果，尤其是发现，当Ge〓Si〓/Si超晶格的生长温度较低时，X-射线小角衍射谱峰的强度随着衍射波矢的增加而周期性调制，表明超晶格的两套界面都十分平整；当生长温度较高时，Ge〓Si〓Si超晶格的X-射线小角衍射谱峰的强度随着衍射波矢呈简单的衰减变化，对应于超晶格内有一套界面不平整的情况；当生长温度进一步提高时，X-射线小角衍射峰明显减少，表明超晶格内两套界面都不理想。

The emergence peak of Anopheles comes before July in Hefei rural areas.

它们的季节发生规律不同，对它们的规律需要分别探讨和分析。

At 920 8C, the sample exhibits a high amount of crystalline phase but, at 1050 8C, it is possible to notice a small decrease of the anorthite peak intensity, benefiting the growth of diopside.

在920.8摄氏度下样本中开始出现大面积结晶状态。但在1050.8摄氏度时，我们看到钙长石含量的峰值有所下降，并造成透辉石含量上升。

MAIN OUTCOME MEASURES: Stress images and peak stress of pedicle screws under lumbar axial compression, anteflexion, extension, lateral bending and rotation.

主要观察指标：椎弓根螺钉在轴向压缩、前屈、后伸、侧屈和旋转等各种生理载荷下的应力云图和峰值。

The accumulation of glutenin subunits is in parabola and its peak is at 20-25 days after anthesis

谷蛋白亚基积累过程呈抛物线型，峰值出现在开花后20-25天。

XP. While your Win98 anti-virus program may work under XP, it won't work at its peak performance.

虽然贵WIN98的反病毒程序可能在XP的，也是行不通的高峰表现。

Objective To asses the effect of anticholinergic agent on the treatment of child asthma and to study the changes in peak expiratory flow rate.

目的 观察抗胆碱能受体阻滞剂在儿童哮喘治疗中的作用及肺功能呼气峰流速的变化。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。