查询词典 frequency band

The system of the invention essentially comprises a frequency mixer, a cascade connection integral comb filter, a fraction-time interpolating device, a half-band filter, a signal shaping filter, a power detection module and a control interface.

系统主要包括混频器、级联积分梳状滤波器、分数倍内插器、半带滤波器、信号成形滤波器、功率检测模块以及控制接口。

In addition, there are "Geng-yun""catch on" and "cloud band frequency hearing Ligeng stop outside the Fisherman's column, with fishing on the remaining pre-trial also get花影" and so on.

此外，还有&耕云&&钓月&和&带云耕罢频听栏外渔歌，伴月钓馀还弄庭前花影&等等。

The Doppler frequency shift and the Doppler broadening are comprehensively utilized, the narrow-band phase plate is inserted between a collimating mirror and a focusing lens of an imaging probe, thereby implementing the spatial encoding of the Doppler information, realizing the imaging requirements on the spatial high-resolution three-dimensional speed vector, combining with the Doppler OCT method which is based on the phase resolution technology to meet the high-speed and high-sensitivity measurement requirements and finally realizing the speed vector imaging with high-resolution, high-speed, high-sensitivity and large-imaging range of the three-dimensional flow field of the microfluidic chip.

综合利用多普勒频移和多普勒展宽，并在成像探头的准直镜和聚焦透镜之间插入窄带相位片，实施多普勒信息的空间编码，实现空间高分辨三维速度矢量的成像要求，再结合基于相位分辨技术的多普勒OCT方法则能够满足高速度高灵敏度的测量要求，最终实现对微流控芯片立体流场的高分辨率、高速度、高灵敏度、大成像范围的速度矢量成像。

Linear CO desorbs earlier and quicker than twin and bridged CO with the progressive heating from 25 to 300°C at 0.1MPa, and the three types of adsorption disappear at 265℃.At 205℃ the adsorption amount of linear CO and bridged CO increases with the pressure from 0.1 to 3.0MPa, but the adsorption amount of bridged CO is more than that of linear CO. At 0.1MPa and 25℃, CO2can decompose into CO and then CO adsorbs quickly, namely, CO2→CO+O, but the wave numbers of the adsorptive CO from decomposed CO2 are different from the pure CO, which demonstrates the effect of on CO adsorption. With the pressure of CO2 from 0.1 to 3.0MPa at 25℃, the total adsorption amount increases and the band at 2052cm^(-1) shifts towards higher frequency.

压力保持0.1MPa，温度由25℃升至300℃时，线式比桥式先脱附，至265℃时，3种吸附基本脱附完全；当温度维持205℃不变而压力逐步由。0.1升至3.0MPa时，线式吸附增量较少，桥式吸附增量较多，CO2在0.1MPa，25℃时就能发生快速的解离吸附，即CO2→CO+O，其吸附行为表现为CO的线式吸附，但吸附峰与纯CO吸附时不同；当温度稳定在25℃而压力逐步升至2.5MPa时，不仅CO2吸附量增大，而且其2052cm^(-1)吸附峰有向高波数移动的趋势。

Because of the nonlinearity, the width of stop band structure decreases, and the pulse attains an instantaneous frequency which depends on the detuned parameter, velocity, intensity and nonlinear coefficient.

在非线性作用下，禁带宽度会变小，波的频率也会发生偏移，其偏移量主要取决于失谐因子、传播速度、波振幅强度以及非线性系数等参量。

The ferroelectrics with photoelectronic, acoustooptic, and nonlinear optical effects are good candidate for constructing optical switches, power splitters, couplers, filters, frequency doublers, and integrated photonic devices. Especially, the newly developed fabrication technology for ferroelectric-based photonic crystals renders a perspective application of ferroelectric materials in photonic band-gap engineering.

具有热释电效应的铁电物质是制作新一代非致冷红外探测器的理想材料；利用铁电体的电光、声光和非线性光学效应，可构建光开关、功分器、耦合器、滤波器、倍频器等无源光学元器件或集成光子器件；特别是近年来发展的铁电光子晶体制备技术对推动和拓展铁电氧化物在光子带隙工程领域的应用带来了新的希望。

In the condition of noise level of 80 dBA and75 dBA (center frequency 500Hz, band 316Hz in pink noise) and speech le-vel of 75 dB and 70 dB, the intelligibility for listeners wea-ring earmuff were 86.7% and 84.6% respectively, however, for those notwearing earmuff were only 70% and 64.8%.

在500Hz中心频率，带宽为316Hz的粉红噪声，声级80dBA和75dBA环境下，戴耳罩接收75dB、70dB的单音字，清晰度分别为86.4%和84.4%，不戴则为70%和64.7

Meanwhile, this paper analyzed and compared the frequency spectrum andintensity radiated of the 1/3 octave band of the tire tread patterns' noise whichwas measured from different direction in the laboratory, and find out that tirepatterns noise is similar to the sound of loudhailer and has strong directivity.

同时，本文还对在室内不同方位所测得的轮胎花纹噪声1／3倍频程的频谱图与直方图进行了分析、比较后发现轮胎花纹噪声的发声类似扬声器发声，有极强的指向性，一点测试会导致轮胎方案排队择优上的困难，为此，提出了一种全方位测定声级的方法，拟定了测试规范，实验证明行之有效。

This thesis presents a multi-band voltage-controlled ring oscillator via the multiple-pass connection, resulting in a wide range of oscillation frequency.

本论文提出一个具有多频带的电压控制环型振荡器(Voltage-Controlled Ring Oscillator)。

So we should consider choosing the way to design it according to a variety of factors.A NLTL frequency tripler in Ka-band are designed by loading eleven varactors in a high impedance microstrip line in the thesis.

本文利用高阻抗微带线加载11个变容二极管实现了非线性传输线八毫米三倍频器，该倍频器的缺点就是管子太多，不利于小型化。

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。