查询词典 wide band

Wide band reflection can display white images instead of monochromic images.

宽频谱的反射可以呈现白色的影像而不是只有单色的影像。

However, the photoactivity of normal TiO_2 nanoparticles do not suffice the requirement of the practical application because of its wide band gap and high combination ratio of electron-hole pair.

但是普通纳米TiO_2带隙较宽、光生电子-空穴对的复合几率高，使其活性还不能满足实际应用的需求。

Featured by wide band gap, high breakage electric field, high electron mobility, low dielectric constant, strong irradiation proo...

非晶硅薄膜和SiC薄膜由于其优异的光电特性，在半导体产业中占有重要的地位。

A wide band (24–40 GHz) fully integrated balanced low noise amplifier using Lange couplers was designed and fabricated with a 0.15 m pseudomorphic HEMT technology.

使用0.15 um pHEMT工艺，设计了一种基于Lange耦合器的全集成的宽带（24－40GHz）的平衡式低噪声放大器。

The research work presented in this dissertation cover the characteristics of Time Domain Transient Electromagnetic Field analysis method ,the particular analysis of Pseudospectral time-domain algorithm, the improved or hybrid algorithms of PSTD and it\'s application in high power ultra wide-band technology and photonic crystals design.

本文主要研究了时域瞬态电磁场计算方法的基本特性，对近年来出现的时域伪谱算法进行了详细地分析，提出了多种改进及混合算法，并研究了其在超宽带电磁脉冲技术、光子晶体结构分析等工程问题中的应用。

The constant division algorithm that has been reported by Srinivasan to Suit for the special ap-plication of wide band audio decompression processing,such as MPEG audio and AC-3,is developped.

针对MPEG音频、AC-3宽带音频数据压缩标准的解码过程中的要求。扩展了已报道的常数除法算法，使之适于特定应用场合。

Since the decrease of the acoustic stapedius reflex amplitude is mediated by the auditory efferent system in sound field, in clinical practice the function of the auditory efferents can be evaluated by testing the change of acoustic stapedius reflex amplitude with the stimulation of the wide band noise in sound field.

声场下白噪声刺激可致镫骨肌声反射幅值降低，临床上可以通过检测声场下白噪声刺激后镫骨肌声反射幅值的变化评枯听觉传出神经的功能。

In the end, we discuss the direction finding algorithms of UCA for the coherent signal sources and the wide-band cyclostationary signal sources, respectively.

最后，分别对相干信源和宽带循环平稳信源的UCA测向算法进行了研究。

In last chapter, two kinds of portable DSPI vibrometer are developed. A new simple and reliable structure for speckle averaging is made up and a circuit to change the phase of wide-band signal (200Hz-100KHz) with keeping amplitude constant is skilfully designed.

巧妙地设计了在保持幅值不变的情况下，对宽带信号（200Hz-100KHz）进行连续和离散相移的电路，研制了一种新型简单可靠的散斑平均器，取得了较好的散斑平均效果。

Through simulation and computation, some critical values to contral interferences are obtained. These values have directive significance to the design and deployment of WRAN.(4) New methods to measure and analyze spectrum aredevelopedAccording to the shortages of previous spectrum measurements, new methods to measure spectrum occupancy in wide-band and multi-point synchronously is proposed in this dissertation, and the tests last a whole week; the relativities of licensed services are considered when test points are selected. More importantly, data mining and in-depth analysis are carried out with the huge amounts of test data, and a channel analysis method using Channel Vacancy Duration and Service Congestion Rate are proposed. The spectrum relativities of 3-dimension in time, space and frequency are researched also. The correlativity between channel state and history information is discoved, and which will provide the scientific basis to channel modeling, spectrum analysis and decision of CR users.

4提出了频谱测量与分析的新方法针对以前频谱测量工作存在的不足，本文提出了多点同时广域频谱测量方法，测量工作持续了一周的时间，同时考虑了测量地点的选取和频谱授权业务之间的相关性；对测量得到的海量数据进行了数据挖掘和深度分析，提出了使用信道空闲时间(Channel VacancyDuration，CVD)和业务拥塞率(Service Congestion Rate，SCR)进行信道分析的方法，研究了频谱之间的时间、空间、和频率三维立体的相关性，发现了信道状态和历史信息的关联性，为CR用户的信道建模、频谱分析和决策提供了科学的理论依据。

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。