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Based on complicate data analysis we obtained experimental elastic scattering cross section of 〓He as well as double differential cross section and angle distribution of 〓He fragment from 〓He breakup reaction.

通过复杂的数据分析提取了〓He的弹性散射实验截面和〓He破裂反应产生的〓He的双微分截面及角分布,首次提供了〓He在〓Be靶上的中能破裂反应数据。

The calculated double differential cross section of the new model is compared with experimental data and previous SCDW calculations with single particle model. The calculated cross sections are larger than those given by previous calculations at backword and forward angles and smaller than those given by previous calculations near the quasi-elastic scattering angle. The agreement with experimental data is much improved.

新模型的双微分截面计算结果与实验值以及以前采用单粒子壳层模型时的计算结果进行了比较,表明CDFM模型的引入对SCDW模型的计算结果有较大的改进,使其在大角度和极小角度区域有所增大,在准弹性散射角附近有所减小,从而能更好地与实验值相符合。

By introducing diffractive surface,with the particular negative dispersive and the power of realizing random-phase modulation,in optical system,a hybrid diffractive-refractive optical system of see-through head-mounted display for augmented reality with 26 mm eye relief,12 mm exit pupil and 20°×15.4° field-of-view is designed.

利用衍射光学元件独有的负色散性质和可实现光波面任意相位调制的特点,在光学系统中引入衍射面,设计了出瞳距离为26 mm,出瞳直径为12 mm,视场角为20°×15.4°的用于增强现实的折/衍混合穿透式双通道头盔显示器的光学系统。

Aimed at the angle legging defect existed in the acoustic location of high speed moving object by smart mine,the estimate of object flying track and coefficient recursion algorithm in flying module are developed in the paper.

文中针对智能雷弹对高速运动目标声定位存在一定角滞后的缺陷,开展了雷弹对目标的飞行轨迹的估计以及对飞行模型中的系数的递推算法,进而对单自由度和双自由度雷弹的拦截方位进行了预测。

The cytoplasmic polyhedrosis virus of the silkworm is the prototype of a large group of animal, plant, fungal and bacterial viruses that contain segmented double stranded RNA.

以双链核糖核酸为基因组的病毒寄主范围很广,如哺乳动物的呼肠病毒,昆虫的细胞质多角体病毒,植物的水稻矮缩病毒,以及某些微生物的病毒,已经发现有十余种之多。

The cytoplasmic polyhedrosis virus of the silkworm is the prototype of a large group of animal, plant, fungal and bacterial viruses that contain segmented doublestranded RNA.

以双链核糖核酸为基因组的病毒寄主范围很广,如哺乳动物的呼肠病毒,昆虫的细胞质多角体病毒,植物的水稻矮缩病毒,以及某些微生物的病毒,已经发现有十余种之多。

To conduct such research a new experimental apparatus was established.With this setup the two-photon excitation spectra of Barium and one-photonexcitation spectra of Strontium Rydberg atoms were recorded and identified.The Stark spectra of Strontium atoms showed the "l-mixing" and "n-mixing"features. By changing laser wavelength and external electric field strengthsimultaneously, the scaled-energy spectra of Strontium 〓 Rydberg atomsat constant scaled-energy ε=-3.00,-2.50 and -1.88 were recorded for thefirst time. The experimental spectra were Fourier transformed and yielded therecurrence spectra.

主要工作包括:建立了一套用于外电场原子光谱研究的原子束实验装置;获得了Ba原子的双光子、Sr原子的单光子零场激发谱,并对各谱线进行了标识;进行了Sr原子电场Stark效应研究,观察到了低场时能级角量子数"l"混合区及高场时主量子数"n"混合区的存在;首次获得了Sr原子在标度能量ε=-3.00、-2.50及-1.88时〓高Rydberg态电场标度能谱及傅立叶变换后的电子回归谱。

Consequently, the vertical TEC around the receiving station was exported. Through this method, the vertical TEC got is an average value of a prick angle around the vertex. With the statistics of dispersion and the high precision data collected in Kunming station, the authors calculated the day by day time sequence value of total electron content in altiplano zone ionosphere. Based on this, they described the characteristics of TEC Sunday-changing in double-hump zone, comparing with CORS of Kunming.

这种方法得到的垂直TEC为天顶周围一锥角内的平均值,通过离散度的统计,并结合昆明站采集得到的高精度数据计算了该地区电离层2007年6~8月的电离层电子浓度总含量的逐日时间序列值,在此基础上对照昆明市连续运行参考站CORS描绘出了对于处在双驼峰区里该地区TEC日变化的特性。

According to distribution of bryophytes on different substances, the frequencies of Bazzania albifolia, Heteroscyphus coalitus and Homaliodendron scalpellifolium in evergreen broadleaved forests of Daweishan Nature Reserve are highest; those of Macrothamnium macrocarpum, Bazzania fauriana, Ptychanthus striatus, Pogonatum cirratum and Thuidium cymbifolium are higher. Additionally, Aerobryum speciosum, Trachycladiella sparsa, Taxiphyllum subarcuatum, Aerobryidium levieri, Lepidozia wallichiana, and Leucobryum bowringii are relatively common.

根据大围山常绿阔叶林内苔藓植物在不同基质上的生长分布情况,结合其甲凡J}rg另出现的频度可知白叶鞭苔、双齿异粤苔、以及刀叶树平醉是大围山常绿阔叶林内的三大优势种;南木醉、厚角鞭苔、皱尊苔、刺边小金发鲜和大羽醉在大围山常绿阔叶林内出现的频率也很高;此外气鲜、散生粗带醉、钝叶鳞叶鲜、莱氏毛扭醉、瓦氏指叶苔、以及狭叶白发鲜等在大围山常绿阔叶林内也有一定数量的分布。

The effect of heattreatment on bonding strength of the Cu./Al bimetal interface was also investigated. When the semicone angle or the percent reduction goes up, the relative slide will also increase. Suitable diffusion heattreatment can improve the bonding strength.

试验结果表明,过大的锥形模半模角α和过大的断面减缩率r%,均会加大铜和铝之间的相对滑动量;合理的扩散热处理制度可以进一步增大Cu/Al双金属界面的结合强度。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。