查询词典 spectrum

The size of tested field was measured using comparison between the tested field image caught through CCD and the plotting paper image when plotting paper was placed in the tested field position with no plasma jet; the emission intensity distribution of tested field was obtained using stepping motor taking fiber probe to scan tested field, and the spectrum analysis instrument was used to show the spectrum intensity information.

通过CCD获得的待测场图像与没有射流射出时在待测场处放置的坐标纸图像进行比对，测量了实际待测场的大小；利用步进电机带动光纤探针对待测场进行扫描，通过光谱仪获得了待测场的光强分布。

From the point of view of spectrum of period signal, the method decreases and disappears even spectrum leaking.

从周期性过程信号频谱分析的角度，这种方法以使频谱泄漏大幅减少甚至消除。

Based on frequency spectrum of each point, amplitude spectrum of structure-borne noise and testing results of air-borne noise, the authors analyze the vibration characters and latent faults of double-ring gear reducer, coming to the value and the cause of the noise, providing theoretical basis f...

结合各测点频谱图、结构噪声幅值图谱和空气噪声测试结果，分析了双环减速器振动特性及可能存在的故障，得出其噪声值和噪声产生的原因，为设计双环减速器，减小其振动噪声提供理论依据。

USB portable multi-channel analyzer software on the PC can be achieved on the information collected spectrum analysis, given a spectrum of related data with a high value.

USB便携式多通道分析仪的PC端软件，可以实现对采集信息的频谱分析，并且获得频谱图以及相关数据，具有极高的价值。

Power spectrum function, the use of detailed explanation for the analysis of power spectrum is critical.

详细说明：功率频谱函数的使用详细解释，对于分析功率频谱非常关键。

TO this end the possibility of applying SSB broadcasting to radio has been suggested in the psat as a means of alleviating the overcrowede broacast bands of the frequency spectrum. In 1979 the World Administrative Radio Conference passed a resolution to improve the untilisation of the spectrum by the future application of SSB broadcasting.

作为减轻广播波段频谱过分拥挤的手段，应用单边带进行无线电广播的最终可能性过去曾被推荐。1979年世界无线电行政大会通过了一个决议以将来应用单边带广播来改善频谱的利用。

By producing pseudorandom number series, we rectify the power spectrums of normal random inputs in the same shape as power spectrums of simulating signals. Through Laplace transformation, we can acquire the frequency response functions of rectifier. Two simulating examples were presented. The power spectrum curves based on one peak function model were almost coincided with the power spectrum curves of simulating loads shown in the figures. Simulating results of input loads had good accuracy. Creating a simulating method and program of input load in this paper was effective.

本文利用随机过程仿真的一般理论在已知随机载荷的分布特性、均值、方差和功率谱函数以后，实现随机载荷的计算机仿真，即利用仿真技术得到符合已知载荷的分布特性和功率谱特性的随机载荷的时间序列。1 产生伪随机数序列及分布整形采用乘同余法产生伪随机数的递推公式为[2 ] ：yi+1 =λyi ( 1 )式中M =2

Chemometric method were used to analyze UV spectrum of TCAS-heavy metal complex, pure UV spectrum of TCAS-heavy metal complex and TCAS-heavy metal complex distribution curves toward concentration of heavy metals in solution were gained. Finally, complex constants of TCAS towards Cu, Zn, Cd and Pb were got to be 9.79、8.72、6.87 and 5.00, respectively.

采用化学计量学分析TCAS络合重金属的紫外光谱，获得了TCAS－重金属络合物的纯紫外光谱，以及TCAS、TCAS－重金属络合物随重金属浓度变化的分布曲线，并最终解析得到TCAS与Cu、Zn、Cd和Pb的络合常数分别为9.79、8.72、6.87和5.00。

The key problems of software radio and direct sequence spread spectrum range used in high range radio fuze are discussed. The effects of doppler frequency and carrier's initial random phase are analyzed. A new direct sequence spread spectrum algorithm based on software radio is proposed, by using differential encoding and quadrature demodulating, the effects of doppler frequency and carrier's initial phase on the output of inference filter are eliminated successfully.

研究了软件无线电和直接扩频测距技术在大炸高无线电引信应用中的关键技术问题，分析了由于多普勒效应引起的载波频偏以及载波随机相位对测距的影响，提出了一种基于软件无线电的直接序列扩频解调算法，通过采用差分编码和正交解调的方法，消除了多普勒频偏和载波随机相位对测距的影响。

Radio spectrum measurement is an important application in the radio spectrum management field.

0引言无线频谱监测与管理是伴随着无线通信技术的进步而不断发展的。

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。