查询词典 bands

UV spectra of the n -octanol gels formed by the three gelators indicate that the K bands of benzene rings are red shifted. It reveals that the π-π stack is one of the driving forces for the self-assembly of the gelators. The extent of red shifts of K bands depends on the amount of methyl groups in benzene rings which is in accord with the stabilities of the gels formed by such three gelators.

紫外吸收光谱表明，对比其溶液态，三种衍生物聚集体苯环的K带发生红移，表明π-π堆积作用是亚苄基山梨醇衍生物凝胶剂自组装的驱动力之一；红移的幅度随苯环上甲基数量的增加而增加，这与三种衍生物形成的分子凝胶的热稳定性相吻合。

The different proportion of R-bands and G-bands in 4 species of Mammals (human, red muntjak, black muntjak, and Chinese hamster) have been reported. The technique described here may be of interest as an easy method for inducing banding patter

我们采用该技术处理人、赤麂、黑麂、中国仓鼠细胞后得到不同比例的R带和G带，带纹较为清晰，易于辨认，分辨率也比较高，有些染色体的带纹数目要比常规方法所作的R带和G带带纹多。

Sardonyx is a blend of sard and onyx with the red bands of sard and the white bands of onyx.

玛瑙是一种混合的农业和农村发展，并与红玛瑙带的农业和农村发展和白色带的玛瑙。

To increase the security of the watermark, a new binary image encryption algorithm based on TD-ERCS map is presented. The watermark is encrypted by a chaos sequence generated by TD-ERCS map; A novel color image watermarking algorithm is proposed based on discrete chaotic map and 2-dimensions discrete wavelet transform. The watermark is encrypted by the new binary image encryption algorithm, and the encrypted watermark is embed into four sub-bands of the most deep level of blue branch of host image by three-level wavelet transform, and the embedded positions are determined by general cat cha otic map; A novel color-image blind detection watermarking algorithm is proposed based on integer wavelet transform and subsampling. The scrambled watermark is encrypted and embed into the low sub-bands after four sub-images of the Y branch of host image is transformed by two-level wavelet transform, and the embedded positions are determined by Logistic chaotic map, this watermarking scheme can realize blind extraction.

为了提高水印图像的安全性，提出了一种基于TD-ERCS混沌映射的二值水印图像的加密算法，该算法利用TD-ERCS映射产生的混沌序列加密水印图像；将离散混沌映射和二维离散小波变换相结合，研究了彩色图像水印新算法，该算法先对混沌序列加密后的水印图像进行小波变换，再嵌入到宿主图像的蓝色分量的最深层的四个子带中，嵌入位置则由广义猫映射确定；将整数小波变换和图像子采样技术应用于数字水印，提出了一种彩色图像盲提取水印算法，水印嵌入时，先对宿主图像在YIQ色彩空间中的Y分量进行子采样，并对得到的四个子图像分别进行二级离散小波变换，然后将置乱并加密后的水印图像嵌入到小波变换后的低频子带中，其嵌入位置由Logistic混沌映射产生的混沌序列确定，实现了水印的盲提取。

Results:We detected the 230bp bands of gag and 1100bp bands of tax by agarose gel electrophoresis and proved to separate the HTLV-I provirus successfully.

结果 凝胶电泳检测到HTLV-I前病毒DNA的gag和tax片断。

Overlap bands were separated,main bands of cellulose,lignin and wood meal weresigned,and three parameters(esterification degree,carbonyl ratio and crosslinkage degree)ofesterification reaction were defined in FTIR spectra.

分离重叠谱峰，归属纤维素、木质素和木粉主要FTIR谱峰，确立了三个交联酯化反应参数：酯化度；羰基比，和交联度。

The localization length is found to be very small in gaps and much larger in bands, the transmission decreases in bands while increases in gaps as the disordering degree increases .

当无序度较大时，局域长度不仅和随机度、带隙有关，还受到材料的影响；若光束斜入射，TE模的局域长度要远小于TM模对应的值，且其最小值向短波方向移动。

In the last new years , as the demands of wireless communication system grows rapidly , the bands of microwave frequency had been saturated with various communication applications . To achieve wider spectrum for high-speed and high-capacity transmission , bands of millimeter-wave frequency are the solution of this problem . The advantage of MMW wireless communication systems is wider bandwidth comparing with microwave communication systems . To utilize the spectrum efficiently , many methods of complexly digital modulation is proposed . The more complex modulation , the higher linearity is required , and more various phase of signals are required to accomplish process of modulation . Therefore high-linearity and quadrature-phase modulator and demodulator are the emphasis of this thesis . For high level of integration , high performance and low cost , this chip is fabricated by the complementary oxide semi-conductor 0.13um process . A compact size of direct down-conversion and direct up conversion circuits will be presented in this thesis .

近年来随著无线通讯产业的蓬勃发展，微波频带已经趋近於饱和，为了追求更宽的频谱来达到更快传输速率及高资料容量的传输，宽频的毫米波频段提供了解决此问题的途径，毫米波无线通讯系统提供了相对於微波通讯系统宽频的优点，且为了更有效的使用频谱，各种不同且复杂的数位调变方式及方法被发表出来，越复杂的调变方式其所需的线性度越高，且需要更多不同的相位讯号来完成调变的过程，因此高线性度及四相位的调变及解调器将是此篇论文的研究重点，为了达到高整合性，高效能，及低成本的电路设计，我门利用互补式金氧半导体制程来完成此电路设计，因此一小面积的直接降频(Direct down-conversion)及直接升频(direct up-conversion)电路将在文中介绍。

Mall Props to amend a white fox ears fox ears and yellow hair bands hair bands showed abnormal pixels.

修正商城道具白色狐耳发箍和黄色狐耳发箍显示图素的异常。

Theoretically,the intershell coupling makes energy bands of multiwalled carbon nanotubes split and the degeneracies in the energy bands reduced,and the bandgaps of multiwalled carbon nanotubes decreased.The small bandgaps of multiwalled carbon nanotubes ensure the presence of a vibrational manifold in the optical region for each shell so as to minimize optical emission.

计算结果表明，层间耦合使多壁碳纳米管的能带分裂，能级简并度降低，同时使多壁碳纳米管的带隙减小，小的带隙确保了每层中都存在振动模式，多数激发态电子通过相邻管的快速振动转化能量而产生无辐射跃迁，使其荧光很难观察到。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。