查询词典 spectrum

By analyzing the theory of higher order cummulants and higher order spectrum ,the methods of machine fault feature extraction are researched based on higher order spectral analysis by using the character that higher order spectrum can restrain the gauss noise.

在分析高阶累积量与高阶谱的理论基础上，利用高阶谱可以抑制加性高斯噪声的性质，研究了基于高阶谱分析的机械故障特征提取方法，提出了基于双谱估计的齿轮故障诊断的方法。

The modem spectral estimate and higher order spectral analysis are utilized to estimate the spectrum of the atom clock data respectively, and the noise characteristic is analysed by fitting to the spectrum of the atom clock.

利用现代谱估计法和高阶谱法分别估计原子钟数据的功率谱，并对功率谱进行拟合，可分析原子钟的噪声特性。

X-ray tube spectrum model;spectrum reconstruction;attenuation data

X射线球管光谱模型；光谱重建；衰减数据

Two new Raman spectral lines of I_2 in benzene solution are found in the experiment which is proved that resonance absorption Raman spectrum by liquid-core optical fiber much stronger than resonance absorption Raman spectrum by absorption tube.

发现了两条新的属于碘分子的拉曼谱线，这证明了使用液芯光纤方法获得的共振吸收拉曼光谱比吸收池方法获得的谱线强度强很多倍。

Therefore in restoring full spectrum love, the map carvers are succeeding at restoring the state necessary to go home to the Tao; as everything in the Tao is founded upon full spectrum love.

因此，当恢复了全谱的爱的时候，地图绘制者就正在成功地恢复那种回家到道中所需的必要状态；因为道中的一切都是基于全谱的爱而创造的。

The frequency spectrum of noise is very wide, and will superpose with useful signal that has the notable influence to digital measurement and frequency spectrum analysis. Base on it, the method of solving zero floating problem of Waveform digital reconstruction process is proposed.

噪声的频谱噪声频谱很宽，将与有用信号的频谱重叠，对数字测量、信号处理和谱分析有显著的影响，并提出了解决波形数字重构中数字示波器零漂影响的方法。

Laser Raman spectral technique is an important section in modern laser spectral techniques. Laser Raman spectrum plays an important role on the aspects of analyzing molecular structure, symmetry properties of crystal, investigating solid structure phase-variation and the structure of IR spectrum of molecule. In recent years,it has been extensively applied in many research fields such as organic and inorganic analytical chemistry, biochemistry, petrochemical industry, macromolecule chemistry ,etc.

激光喇曼光谱技术是现代激光光谱技术中的一个重要组成部分，激光喇曼光谱对于确定分子结构和晶体的对称性、研究各种固体结构相变及红外光谱结构分析等方面具有重要作用，近些年来已经广泛地应用于有机和无机分析化学、生物化学、石油化工、高分子化学等领域。

In cellular and PCS systems, a grouping of physically proximate cells in which each cell uses a different subset of the total spectrum allocated for the wireless service, but the grouping or cluster of cells represents the total allocated spectrum.

蜂窝系统以及 PCS 系统中一组物理上紧邻的小区。在这个小区群集中，每一个小区使用的频谱是无线通信业务分配到的整个频谱中的一部份。但是小区组或群集却代表整个分配到的频谱。

The testing mechanism of IR spectrum transmittance is studied and the testing method of IR spectrum transmittance is established.

研究了烟幕红外光谱透过率的测试机理，建立了烟幕红外光谱透过率的测试计算方法。

In this paper, total logistics amounts are chosen as evaluation index, and artificial time series are designed to solve the shortness of statistical data in Chinese logistics. Spectrum estimation theory depicts time characteristics in frequency domain thus has such benefit than time domain methods. This paper evaluates the period of Chinese logistics using spectrum estimation. Stationarity of artificial series is verified, parameter sensitivity of truncation point is analyzed, six periods with different delay window are compared, and significance of period evaluated is tested.

中国物流统计数据缺乏，客观上限制了对其周期规律的研究，本文选取社会物流总额作为测度指标，设计了一种人工序列，解决了统计数据过短问题；谱估计法从频域角度揭示客观事物的时间特性，在研究时间序列周期波动方面具有时域分析法所不具备的优势，作者采用谱估计法对中国物流发展周期进行测定，检验了指标序列平稳性，分析了截断点参数灵敏度，比较了6种不同滞后窗下周期值，并检验了所测得周期的显著性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。