查询词典 cross-section

The two-photon absorption cross-sections of these styryl derivatives were determined by Z-scan technique, and the benzothiazolium derivatives exhibited the largest TPA cross-sections (10〓s·cm〓/photon) and the best power limiting ability at high operable incident intensity. The results show that the benzothiazolium derivatives are promising organic compounds as two-photon absorption optical limiting materials. 2. Several organic dyes active to 800nm femtosecond laser with D-π-A structure were designed and synthesized.

研究了它们的上转换荧光、上转换激射和光限幅行为，通过改变染料分子共轭体系的大小，首次实现了在576nm-635nm范围内的双光子上转换激光波长的调节，其中噻唑啉碘盐类二苯乙烯化合物的双光子上转换激射峰（576nm）是迄今在1064nm皮秒激光作用下能够得到的最短波长的激光；阴离子显著改变上转换激射效率，但对上转换荧光峰和激射峰的位置影响很小；增加溶液的浓度，上转换荧光光谱和激射光谱红移，并在一定的浓度范围内，能够有效的提高上转换激射效率；利用Z-扫描技术测定了染料分子的双光子吸收截面，发现苯并噻唑类染料分子的双光子吸收截面高达10〓s·cm〓／photon，而且在较大的入射光强范围内，这类染料分子具有较大的光限幅能力，是一类作为双光子吸收光限幅材料很有潜力的染料分子。

Gravure press is not discharge on down during the mode of production, the per-color business card printing and membership card after harvest cylindrical insertreleased, offline after the subject with a single eyefor a cross-cutting machine rolled business card printing and membership card making for easier and more precise printing long broken sected collection, and then set the broken sected collected leaflets business card printing and membership card making products in spinons convex, indentation, die-cutting, waste, collection, testing, packaging; business card printing and membership card making products for stamping or compact label positioning easy-care, and the increase in the operation, the disadvantage is that the above process, the operation covers an area of large plant, to make more, and sometimes the drum to the materials offline operation in cross-cutting precision |interrupted Zhang superstandard, it will be a large number of categorizing people and a large area of the workspace.

凹印机是采用上料下料不停机的生产方式，进行逐色制卡和会员卡制作后收成卷筒状取下，离线后通过一台识标横切机把卷状制卡和会员卡制作品以单幅印长断切收集，再将断切收集来的单张制卡和会员卡制作品进行棘凸、压痕、模切、剔废、收集、检验、包装；制卡和会员卡制作品如需要烫金或镭射标定位烫，还需增加工序，以上工艺缺点是工序多，占地面积大，使用机台多、人员多，有时卷筒印材离线作业在横切过程中断张精度超标，还需大量的分检人员和大面积的工作空间。

The possible role of cross-inhibition between GABA_aRs and GlyRs in the CNS I then examined synaptical coupled cultured neurons from the IC to test for the possible role of this cross-talk during GABA_AR-mediated neurotransmission.

此外，通过转染甘氨酸受体α亚基在培养的下丘神经元上提高甘氨酸受体表达，结果发现甘氨酸受体和GABA_A受体所引起的电流比值显著性的增加，并且交互抑制的模式也从对称性的转变为非对称性的或单向的交互抑制。

Since Jegadeesh and Titman (1993)and DeBondt and Thaler (1985) respectively documented the short-run cross-sectional momentum and the long-run cross-sectional reversal in stock returns, more and more anomalies had been found gradually.

自Jegadeesh和Titman(1993)与DeBondt和Thaler(1985)分别发现，股票收益率序列存在着明显的&惯性&与&长期反转(long-run reversal)&等截面市场现象后，越来越多的收益率&异象&被逐步证明。

Many new detection techniques are proposed, that include: To overcome the faults of cross-terms and short unambiguity range for the common Wigner-Ville Distribution , short-time Fourier transform and Gabor transform are applied to SAR moving target detection. To improve the detection performance of WVD in noise environment, a new technique based on the Cross-WVD is proposed. The application of fractional Fourier transform to chirp signal detection is analyzed and extended to SAR moving target detection. To eliminate the restriction of chirp-Fourier transform, a new modified definition is proposed and applied to SAR moving target detection. To detect multiple moving targets whose scattering intensities are different heavily, the CLEAN technique is combined with the above techniques and the ideal detection performance is achieved. At last, the whole dissertation is concluded.

具体的研究成果如下：针对常用的Wigner-Ville分布在多目标情况下存在交叉项，并且多普勒不模糊范围小的缺点，提出将短时Fourier变换和Gabor变换应用于SAR运动目标检测，分析了其优势所在；为进一步提高Wigner-Ville分布低信噪比条件下的信号检测能力，提出基于互Wigner-Ville分布的运动目标检测方法；分析了分数阶Fourier变换在线性调频信号检测中的应用，提出基于分数阶Fourier变换的运动目标检测算法；对离散Chirp-Fourier变换的定义进行了修正，提出修正的离散Chirp-Fourier变换，克服了限制其应用的约束条件，并用于SAR运动目标检测当中；强度相差较大的多运动目标检测历来是机载SAR技术的一个重点和难点，我们将CLEAN思想融入上述多种算法当中，良好地解决了该问题。

The results show that mechanical heterogeneity has great influence on the J-integral of welded joint containing transverse crack. The J-integral on the path cross the interface between welded joint and base metal is higher than the J-integral on the paths in the weld metal for undermatched joint,while the J-integral on the path cross the interface between weld metal and base metal is lower than the J-integral on the paths in the weld metal for overmatched joint. Moreover,the difference of J-integral values increases with the increasing of the load and strength mismatching difference and the path-enclosed length of interface between weld metal and base metal.

计算结果表明：力学不均匀性对含横向裂纹焊接接头的J积分有重要影响，低匹配焊接接头中积分路径穿越焊缝与母材界面的J积分值高于积分路径在焊缝内的J积分值，高匹配焊接接头中积分路径穿越焊缝与母材界面的J积分值低于积分路径在焊缝内的J积分值；载荷越大，焊缝与母材的强度差别越大；积分路径中包含的焊缝与母材界面长度越大，J积分的差值越大。

Cross Stitch by Za: Free Animal Charts and Patterns: Free Cross Stitch ...

跨缝由杂：免费动物的海图和模式：免费跨缝。。。

Cross Stitch by Za: Free Charts and Patterns: Free Cross Stitch Charts ...

跨缝由杂：免费图表和模式：免费跨缝图表。。。

Adding sugar to the three raw starch and their low cross-linkedsuccinylated starch,the viscosity and thermal paste viscosity were rised eventually; addingcitric acid, lactic acid and sodium chlorid to the three raw starch and their low cross-linkedsuccinylated starch, the final viscosity and thermal paste viscosity showed varying degreesof decline.

加入蔗糖使的三种原料淀粉及其低交联酯化淀粉的热糊粘度与最终粘度有所上升；加入柠檬酸、乳酸、氯化钠后使得三种原料淀粉及其低交联酯化淀粉的热糊粘度和最终粘度呈现不同程度的下降。

Of or designating a pair of crosses in which the male parent in one cross is of the same genotype or phenotype as the female parent in the other cross .

倒易移位的属于或表明一对混血种的，其中一个混血种的父亲与另一个混血种的母亲具有相同的基因型或表现型

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。