查询词典 exponent

Displays the number in exponential notation using the number of 0s as a placeholder for the exponent value.

数字显示，在指数表示法作为一个指数值的占位符的0的数目。"/页"

Firstly, in the frequency domain, differentiatial operator is decomposed into magnitude and phase operator, and the fractional order expressions of periodical signals, such as sine wave, cosine wave and complex exponent signal, are deduced.

首先，在频域中将微分算子分解为幅度算子和相们算子，导出正弦、余弦和复指数信号的分数阶微分表达式；然后考察矩形、三角形、梯形等常用周期信号的分数阶微分。

In order to improve present Monte Carlo methods, method changing the node to optimistical orientation corresponding to the system having the lowest energy was proposed, which ensures the grain boundary moving to its curvature center. The new method avoided re-nucleation, and increased simulation efficiency, and made the simulation process more approaching the physics foundation of grain growth. The results show that the grain growth exponent, n=0.478, is close to its theoretic value, and the topological structure accorded with the normal grain growth of the real material.

简要回顾了晶粒长大理论并分析了现有Monte Carlo模拟方法的不足，提出了一个"择优转换"方法，确保节点转换时晶界向其曲率中心移动，以致模拟过程更接近物理基础，避免了重新形核的发生，使模拟效率大大提高，模拟的晶粒长大指数达到0.478，已接近理论值，组织形貌和实际材料正常晶粒长大组织基本一致。

It's found that the high exponent Gaussian feed overmatch general Gaussian feed on radiation characteristic and power capacity.

同时，将高次高斯馈源的性能与一般高斯馈源进行了比较，发现其无论是在功率容量还是在辐射特性上均超过了后者。

Among so many synthesis methods for FGN, there are the spectrum-based approaches, spectral simulation and Paxson method, which features and the relation between are explored in this paper. Morever the spectrum-based estimation for hurst exponent, periodogram, is researched.

在众多的合成分形高斯噪声的方法中，研究了基于功率谱的FGN的生成算法，谱模拟方法和Paxson方法的特点以及联系，同时对基于功率谱的Hurst指数的估计方法，周期图法进行了讨论。

The main contents and results are included as following:The main influence factors on thrust adjusting character of pintle motor were sumarized. The influence of burning rate exponent and throat diameter on thrust was analysed and the relationship between pressure and thrust ratio of pintle motor was obtained.

本文研究内容及主要成果如下：(1)从理论上分析了喉栓变推力发动机推力调节特性的主要影响因素，揭示了推进剂压力指数和喷管喉部面积变化对推力调节特性的影响规律，给出了压力调节比和推力调节比之间的转变关系。

The paper presented a method of detecting long-range correlation in a signal--detrended fluctuation analysis and applied it to diagnose gear faults. Two key problems, i.e. scaling range and polynomial order of fitted trend, were discussed. Scaling exponent was extracted to be as a detector for diagnosing five types of gear faults, their were normal, spalling, tooth broken, wearing and cracking.

探讨了一种检测非平稳信号中长程相关信息的方法--利用去趋势波动分析（detrended fluctuation analysis，DFA）方法来诊断机械故障，着重研究DFA的尺度范围选择、趋势拟合阶数选择等关键问题，提取尺度指数作为诊断的特征参数，应用于齿轮的正常、剥落、断齿、磨损、裂纹等五种状态诊断，正确率达96％以上。

The power exponent, however, is much less than the prediction of the linear adiabatic theorem.

这个函数关系与线性系统的绝热参量和绝热保真度的幂律关系非常相似。

Power exponent of the impeller for the different number of blades changes when viscosity increases.

7随着粘度的增大，不同叶片数的叶轮轴功率切割指数趋于定值。

Returns x multiplied by 2 raised to the power of exponent .

返回 x * 2的指数次乘方。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。