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Effect of heat treatment on the ndcrophase separation of a segmented poly copolymer based on poly diol, 3, 5 dithyltoluene diandne and 4,4'-diphenylmethane diisocyanate has been studied bymeans of fourier transform infrared spectroscopy.

用傅里叶变换红外光谱方法研究了热处理对由聚环氧丙烷聚醚多元醇、3.5－二乙基甲苯二胺和4，4－二苯基甲烷二异氰酸酯组成的多嵌段聚氨酯脲的微相分离行为的影响。

The diplomatism of China is reviewed by the politics with broad sense. The diplomatism of China comes through a great transform under the new situation. The new Characteristic is the embodiment of the benefit,safety,dominion,droit.

运用广义政治的方法论考察中国外交，认为在新的形势下中国外交正在经历一场巨大的变革，其利益观、安全观、主权观、权力观都体现出新的特点。

Then it would be embedded into the discrete cosine transform coefficients exception of direct current in digital image blocks.

该算法依赖于可信任第三方提供的时间戳以及用户的私钥和授权码生成双重水印信息，然后将其嵌入在图像分块除直流分量外的DCT系数上。

For every ULA, the wide-band signals are sampled in spatial and temporal, then 2-D discrete Fourier transform is carried out. A projection operation on 2-D representation of wide-band signals is applied in the spatial-temporal frequency domain. The direction cosine relative to the ULA axes is estimated by MUSIC algorithm.

该方法采用3个共面的均匀线阵，每一均匀线阵对宽带信号空间采样，然后进行空时二维DFT变换，在空时频率域对宽带信号进行投影变换，用MUSIC算法实现宽带来波信号方向余弦的估计。

During the period of design, according to change direction various parameter of the arm spare parts, analyze it is anticipate by the metals to change in to take shape the Forging piece to transform process, draw up more reasonable craft process;From change direction the arm Forging piece system process, design more economic, use convenience, more reasonable molding tool.

在设计过程中，根据转向臂零件的各种参数，分析了其由坯料变为成形锻件的变形过程，制定出了较为合理的工艺流程；由转向臂锻件的制坯过程，设计出了较为经济，使用方便，较为合理的模具。

Edge detection ; first directional derivative ; extremum ; Fourier transform

边缘检测；一阶方向导数；极值；傅里叶变换

Edge lines are extracted automatically from image, by acquiring points of extremum of first directional derivative vertical with edge line with Fourier transform in frequency domain.

同时，参考一阶方向导数的数值来排除一些非边缘点（一阶方向导数的数值为常数者，零也为常数）。

First, we extend the general finite element method from the function surface to the parameter function. Second, we bring this kind of method into the design of rational Bézier minimal surface. Third, we transform the problem of Dirichlet energy function into the problem of minimizing a discrete objective function.

首先推广了函数曲面中的有限元方法，进而研究如何针对参数曲面使用有限元方法，并把该方法引入到有理Bézier极小曲面造型的设计中，从而将连续的Dirichlet能量函数极小化问题，转化为一个离散形式的目标函数的极小化问题。

The Discrete Fourier Transform plays an important role in digital signal processing and many other fields.

引言 离散傅里叶变换在数字信号处理等许多领域中起着重要作用。

Discrete Fourier Transform is used for digital signal analysis and processing.

离散傅立叶变换是数字信号分析和处理中常用而有效的手段。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。