The testing result of photoluminescence spectra at room temperature shows that all the samples have two emission bands, that is, UV emission band near the band-edge and visible emission band.
室温下样品光致发光光谱的测量结果表明：所有的样品均有两个发射带，即近带边紫外发射和可见发射带。
The narrow band data traces atoms in the nebula, with emission from sulfur atoms in red, hydrogen atoms in green, and oxygen in blue.
窄带滤波器的数据追踪的是星云中的原子，硫原子发出红光、氢原子放出绿光，而氧原子呈现蓝光。
At last, we recomposed some frequency band of wavelets, and the results can efficiently extract the features of acoustic emission signal.
最后通过对能反映源特征的频带信号进行重构，这样能更好更有效的提取声发射信号的本质特征。
The phenomenon of the blue range electroluminescence of the boron doped diamond thin films is reported, and the several light emission mechanisms on band A are summarized.
报道了金刚石薄膜的蓝区电致发光现象，总结了几种有关金刚石薄膜蓝区发光“A”带的发光机理。
The band edge emission was observed in the PL spectra at room temperature. Its intensity was related to quality of the crystal.
在室温下的PL测量中见到了带边发射，其强度与晶体质量有关。
Difference in extent of the Fermi energy and decrease of band-gap energy for three kinds of CNTs show that CNT with one end open is favorable for the preparation of field emission electrode.
三种不同结构的碳纳米管在费米能的增幅上有些差异，带宽减小的程度也是不同的，一端封闭的碳纳米管在F掺杂后费米能的增幅最大，说明在制备场发射电极时选择一端封闭的碳纳米管更加有利。
In general, hydrogenation enhances the band edge luminescence and passivates the green emission.
一般而言，氢化会增强带边发射并钝化绿光发射。
With the present lasers, X-ray microscopy can be made using narrow band emission or black body radiation from laser plasmas.
就目前的泵浦激光条件，采用窄带辐射和黑体辐射可进行水窗波段X光显微成像的实验研究。
Furthermore, photoluminescence (PL) spectroscopic analysis shows a strong near band edge emission.
同时，光致发光(PL)光谱的分析显示出强的近带边发射峰。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
It is found that the green emission has a clear concentration quenching but the blue band not.
结果表明，绿光发射具有明显的浓度淬灭效应，而蓝光寿命不随浓度明显变化。
Blue shift appears both on the absorb edges in the absorption spectra and on the band-edge emission in the luminescence spectrum.
在紫外吸收谱中表现为吸收边明显蓝移，而在光致发光谱中，表现为带边发射的蓝移。
The fluorescence spectra show that the thin film material emits the characteristic narrow band emission of Tb3 + ion under the UV excitation.
荧光光谱分析表明，所得到的薄膜材料在紫外激发下发射出铽离子的特征发射线。
The output of Amplifier has a filter, which can inhibit the out-off-band harmonic waves and unwanted emission component.
放大器的输出接有滤波器，可有效抑制带外谐波和无用发射分量。
The X-ray diffraction (XRD), excitation, emission and phonon side band spectra of the upper and lower parts of crystals were measured.
测定了晶体下部与上部的X射线衍射图（XRD）、激发光谱、荧光光谱以及声子边带谱。
The preparation, purification, structural simulation, energy band calculation and electron-emission calculation of carbon nanotubes are studied principally in this paper.
本文主要研究了碳纳米管的制备、纯化、结构的模拟以及能带和场发射计算问题。
Spontaneous emission can be totally suppressed or strongly enhanced depending on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density.
通过原子上能级与光子频率带隙边缘的相对位置或者光子态密度，可以抑制或增强原子的自发辐射。
Photonic band gap (PBG) structures have been shown to have a density of states (DOS) of emission field different from that of free-space vacuum field.
光子带隙结构中的辐射场态密度(DOS)不同于自由真空场中的辐射场态密度。
The generation of the magnetic signals at LF band may be caused by the emission of electrons from the breaking crystals in the rocks, whereas that of ULF band by the piezomagnetic effect.
微破裂可能产生了偶电层，在破裂过程中向外辐射，产生了LF频段的磁信号，UL F磁信号则主要由压磁效应产生。
The Hubble image is a composite of exposures through narrow-band filters, presenting emission from nitrogen, hydrogen, and oxygen atoms in the nebula as red, green, and blue hues.
这张哈勃影像是一组通过窄带滤波器拍摄到影像合成，影像中显现了由氮，氢，氧原子放射出的色彩，分别是红色，绿色和蓝色辉光。
The Hubble image is a composite of exposures through narrow-band filters, presenting emission from nitrogen, hydrogen, and oxygen atoms in the nebula as red, green, and blue hues.
这张哈勃影像是一组通过窄带滤波器拍摄到影像合成，影像中显现了由氮，氢，氧原子放射出的色彩，分别是红色，绿色和蓝色辉光。
应用推荐