查询词典 band

A circularly dichromatic pump-probe model is developed with both spin-polarized-dependent band filling and band-gap renormalization effects taken into account.

考虑自旋极化依赖的带填充效应和带隙重整化效应，发展了圆偏振光抽运-探测光谱的理论模型。

The output tuning range was 1810MHz~1930MHz, and the LCVCO used cross-coupled complementary full differential topology with switching capacitor array to cover frequency band, which could lower the VCO gain in each single band and further lower the whole PLL's phase noise performance.

LCVCO的输出频率范围满足1810MHz~1930MHz，采用交叉耦合互补全差分结构和开关电容阵列，实现多带覆盖所需频率范围，降低了单带VCO增益，进而降低了整体相位噪声。

For every ULA, the wide-band signals are sampled in spatial and temporal, then 2-D discrete Fourier transform is carried out. A projection operation on 2-D representation of wide-band signals is applied in the spatial-temporal frequency domain. The direction cosine relative to the ULA axes is estimated by MUSIC algorithm.

该方法采用3个共面的均匀线阵，每一均匀线阵对宽带信号空间采样，然后进行空时二维DFT变换，在空时频率域对宽带信号进行投影变换，用MUSIC算法实现宽带来波信号方向余弦的估计。

In millimeter wave band and sub-millimeter wave band, it has characters of low loss, high power handling, low dispersion and single mode transmission medium.

在毫米波和亚毫米波频段，它具有低损耗，高功率容量，低色散和单模传输的特性。这给毫米波、亚毫米波器件的设计提供了一种选择。

In this paper, we adopt two types of model of a three-level atom in a double-band photonic crystal described respectively by isotropic and anisotropic dispersion relations at the band edges.

在本文中，我们采用双带光子晶体中的两种三能级原子模型，它们分别由禁带边缘的各向同性和各向异性的色散关系描述。

Featuring drum and bugle corps with fluid roll steps, while DSU's band is a show-style band featuring flair and high steps.

以鼓和军号成员为主伴随流动的步伐，而州立大学乐队是一支表演风格很强的乐队，以华丽和高抬腿动作为主。

In this thesis, cascaded electromagnetic band-gap structure is presented to broaden the bandwidth or achieve dual band operation.

紧致型电磁带隙结构本身具有窄带特性，这种带宽瓶颈使其应用大多局限于窄带天线或器件上。

The GaAs, InP-based III-V compound semiconductors, which are known as their wide band-gaps, direct-band transition, high photoelectric conversion efficiency and high saturated electron drift velocity and mobility, become increasingly important and have been widely used in microelectronics and optoelectronics.

以GaAs，InP为主Ⅲ-V族化合物半导体材料具有很宽的带隙，大都为直接跃迁型能带，光电转换效率较高，以及具有很高的饱和电子漂移速度和迁移率。

The luminescence properties were investigated with PL and PLE spectra.Emission peaks were at about 450 nm.This emission was ascribed to the recombination between the sulfur vacancy-related electron trap donor having an energy level just below the conduction band and the Ag-related hole trap acceptor above the valence band.

通过发射光谱和激发光谱对产品的光学性质进行研究，发射峰位于450 nm左右，归属于硫空位相关的电子陷阱施主和银相关的空穴陷阱受主的复合；激发峰位于333 nm左右，归属于ZnS基质的带边吸收。

An excitation band at 218 nm is also observed in the excitation spectra, which corresponds to the electron transition from the ground state to the conduction band.

在其激发光谱中观测到218 nm的激发峰，这归属于电子从Mn2+基态到导带的电荷转移跃迁所致。

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。