查询词典 angle function

Basing on the fast Fourier transform.The fluorescence lifetime is obtained from the tangent function of the phase angle of the first nonzeroth items of the FFT result.This method has advantages such as quick calculation,high accuracy and immunity to the base signal.

基于快速傅里叶变换的拟合方法，从第一个非零项的相位角的正切值得出被测的荧光寿命，具有速度快、误差小、不受本底干扰等优点。

This paper selects subjects from folklore, cultural anthropology, history, andother perspective to analyse literature, carrying on study by using culture prototype ofcriticism, the western tokenism, spiritual analysis, Chinese poetry and imagery, andother theoretical and research methods. It discusses, in the angle of history and reality,in text and out text, the function and impact of these various animal imagery throughthe specific interpretation and analysis. It also reveals the source of Chinese andforeign cultures and the reality of social resources behind Lu Xun love creating andusing animal imagery, as well as the authors inherent psychological characteristicsand cognitive structure.

论文选题对此从民俗学、文化人类学、历史学等角度观照文学，运用文化原型批评、西方象征主义、精神分析、中国诗学意象等理论与方法进行研究，通过对于种种动物意象历史与现实、文本与文本之外的具体解读与分析，探讨了它们在鲁迅作品中的作用与影响，揭示了鲁迅喜爱营造、运用动物意象其后的中外的文化渊源与现实的社会资源，及作者内在的心理个性与认知结构。

So that, it's easy to deduce the correct angle by a trigonometric function equation, which can be setup using Variance derivative must be equal to zero.

利用方差导数为零建立三角函数等式，进行校正角的反向推导计算。

If you remember your trigonometry, then you may recall that the arctangent function can be used to get an angle from an X and a Y coordinate.

如果你还记得你的三角，然后您可能会记得，反正切函数可以用来从一个角度的X和Y坐标。

Key words: geometry; fractal; characteristic angle sequence function; method of undetermined coefficient; square wave Koch-like curve

关键 词：几何学；分形；特征角序列函数；待定系数法；Koch类方波曲线

On this basis, it is given to use Q function based by vector in place of angle sum to calculate relationship between point and polygon.

在此基础上，提出了以矢量和为基的Q 函数替代角度和进行包含关系计算的方法。

This paper studies Chinese function word from the angle of foreign .

本文不仅从句法和语义角度对这组近义介词进行详尽的分析，还从语用角度对其进行了辨析。

Methods: Eight hundred normal cases were chosen randomly for study. Ultrasound was carried out in vertical section at xiphoid process, cross section at middle abdomen, and coronary section at the waist to detect the presence of AHV. The function site, number of AHV, caliber, flow velocity and the angle between AHV and IVC were investigated.

随机选健康查体者800例行超声检查，取剑突下纵切、右腋前线纵切、横切和中上腹部横切、肋间斜切，观察AHV的汇入部位、走向、数量、内径及其与下腔静脉轴线的夹角及多普勒波形、流速等。

Based on the extended Huygens-Fresnel principle and the quadratic approximation of phase structure function, we have derived the analyticl expression of the spatial degree of coherence for partially coherent flattened beams propagating through the slant turbulent atmosphere with the help of tensor integral, then analyzed the effects of different zenith angle, propagation distance, coherence of source and outer scale of turbulence on the spatial degree of coherence on the receiver.

基于广义惠更斯-菲涅耳原理和相位结构函数的平方近似，运用张量积分的方法导出了部分相干平顶光束通过斜程湍流大气传输后接收面光束空间相干度的解析表达式，分析了不同天顶角、传输距离、光源相干性以及湍流外尺度对接收面光束空间相干度的影响。

From the angle of manmade unauthorized passive wiretapping and attack network this paper analyzes the main problems and solution about network information safe and gives a simple description about function and application of antifire wall.

文章从人为故意的未授权窃取、攻击网络的角度，分析了网络信息安全的主要问题及对策，并就防火墙的功能及应用作了简要说明

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷