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。
The transmission zeros(TZ) of Quasi-elliptic function filter could be placed in any position, so the attenuation out of band is controllable, then a high selection performance could get.
准椭圆函数滤波器的传输零点，可以位于阻带内的任意位置处，这能更加灵活地对滤波器的带外抑制度进行调节，其矩形系数可以做得很高。
According to author's experience, design position, design form and construction approach of the late poured band are in detail introduced in this paper.
根据实践，介绍了后浇带的留设位置、设计形式和施工方法。
The corresponding peak value position, half band-width and peak value's allowance of Red, Green and Blue of color measurements of color negative films are provided.
提出了对彩色胶片进行颜色测量时所用的红色、绿色和蓝色峰值位置，半波宽度和峰值允差。
Results After analyzing the band position of 198 multiclones in SSCP electrophoresis, 58 clones was selected to sequence.
结果对198个克隆的SSCP电泳条带位置分析，挑选出58个克隆测序。
As each group arrived over the target, the planes had to jockey for position in the narrow band of sky between the ocean and the lowest deck of clouds at about 1,500 feet.
当每个机组飞抵目标上空时，飞机都不得不在最低约1500公尺的云层及海面之间的狭窄地带重新调整位置。
The result of polyacrylamide gel electrophoresis shows that the protein band of expression is found at the position of about 55kd.
聚丙烯酰胺凝胶电泳实验结果表明在大约55kd的位置上有表达的蛋白质条带。
The phase matching transform is performed on the sample series. of narrow-band radar echo, and the centroid position parameter is estimated by searching for the maximum value of the matching function.
然后对窄带雷达回波采样序列进行相位匹配变换，搜索匹配函数的最大值，从而得到质心位置参数的估计值。
The phase matching transform is performed on the sample series. of narrow-band radar echo, and the centroid position parameter is estimated by searching for the maximum value of the matching function.
然后对窄带雷达回波采样序列进行相位匹配变换，搜索匹配函数的最大值，从而得到质心位置参数的估计值。
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