在讨论

First, according to a phase matching condition of electromagnetic wave on the stationary boundary surface, we find the refelection and transimission angles in the front system with a static ionization front. Then using the transformations of wave vector and frequency we get the corresponding angles in the laboratory system in which the ionization front is moving at relativistic speed.

首先在波面参考系中根据电磁波在固定边界上的相位匹配条件，确定电磁波在静止电离波面上的反射角和透射角，并利用波矢和频率的相对论变换，导出了在实验室参考系中相应的反射角和透射角的表达式，最后对所得的结果作了进一步的讨论。

What differ from that of the researchers in the past is the consideration of the direction of Hopf bifurcation with Dirichlet boundary condition , that is, the conditions when the Hopf bifurcation periodic solutions are orbitally asymptotically stable with asymptotic phase.Our basic idea come from the results given by Tang[30]. We adopt the method used by Hassard in the Hopf bifurcation theorem in [24], which is to judge the existence and the direction of Hopf bifurcation, and the stability of the Hopf bifurcation periodic solutions.

与以前的研究者不同的是，本文不仅讨论了在Dirichlet边界条件下系统的Hopf分支在以扩散系数为分支参数的情况下的存在性和分支周期解的空间非齐次性，而且更多的关注了系统在Dirichlet边界条件下Hopf分支解的稳定性及Hopf分支的方向，也即系统定态解在何种条件下，当分支参数如何变化时产生Hopf分支且分支周期解是带渐近位相轨道渐近稳定的。

At the 16th International Union of Anthropological and Ethnological Sciences Conference to be held in Kunming in July 2008, the Chinese Academy of Social Sciences will host a parallel meeting to discuss the grassland environment and changes in herders' lives.

在联盟第16届国际人类学和人种学举行的会议在昆明在2008年7月，中国社会科学院将主办一个平行的会议，讨论了草原的环境和变化，在牧民的生命。

The using of the technologies of DOA in the orientation estimating of interference is discussed, then an evolutive ESPRIT algorithm is put forward which avoids the eigendecomposition and is easily achieved. To the MUSIC algorithm, an easy eigendecomposition algorithm for Hermitian matrix is presented. It breaks away form the complex matrix decomposition such as QR algorithm. Basing on the whole matrix, the algorithm makes use of the multiplication operation of matrix and vector, which attains simpleness and is fit for DSP. In the field of DOA estimating of correlation interferences, spatial smoothing algorithm consumes too many array units.

讨论了DOA技术在干扰源方位估计中的应用，提出了一种ESPRIT演变算法，该算法避开了特征值分解，实现简便；在MUSIC算法的实现中提出了一个Hermitian矩阵特征值分解算法，该算法摆脱了复杂矩阵分解，从矩阵整体出发，主要的运算是矩阵与矢量的乘运算，算法简单，非常适合DSP芯片实现；在相关源的DOA估计中，空间平滑技术使阵元的损失非常大，本文提出了一种进一步降低阵元消耗的平滑技术—随机空间增益法，其在运算量上的增加很小，但对于相干源的去相关确是有效的。

Secondly, enrichment of 13C and 15N and their combination with NMR spectroscopy can help us study not only the dynamics of decomposition of organic materials but also the changes of their chemical structures during the turnover of the organic materials, which can provide more information in clarifying the C and N cycling and humification of the organic materials applied to soils.

本文根据已收集到的部分资料，对13C标记技术在土壤和植物营养中的应用情况作一简要综述，并在此基础上讨论了13C加富标记技术在研究植物光合作用、光合产物的去向以及标记秸杆在土壤中的分解等方面的应用及其注意点，旨在能为国内开展这方面的工作提供十分有用的参考

Secondly, we discuss generalizedderivable mappings at unit and Jordan derivable mappings at unit on Von Neumannalgebra, and we prove that every norm continuous linear mapping generalized deriv- able at unit is a generalized inner derivation, every norm continuous linear mappingJordan derivable at unit is a inner derivation.

其次对Von Neumann代数M上的在单位广义可导和在单位Jordan可导的线性咉射进行了讨论，证明了在单位广义可导的范数连续的线性映射是M上的广义内导子，在单位Jordan可导的范数连续的线性映射是M上的内导子。

Leastsquare method and Lagrange's interpolation formula see their applicationsfor fitting fore-and-aft lines-whose aim is to calculate the intersection point ofequivalent inclined waterline-and differences. In order to replace theinconvenient alternate conduct of drawing and calculating, improvement hasbeen introduced into the paper which means all work can be done bycomputer. Capacity calculation cannot be done without boundary layer build-up. Fit every area curve and area moment curve is necessary because ofinterpolation.

在第二章中，给出了B样条函数的数学表达形式，推导了B样条曲线下所围面积、面积矩公式；讨论了最小二乘法和拉格朗日插值法的数学形式，并在拟合船体型线上给出首、尾轮廓线的具体实例，对比不同方法进行拟合的差异，其目的是为了求得与等体积倾斜水线的交点；而水线的确定改变了以往人工作图与计算交替进行的不足，尝试用计算机完全代替人工作图，以求有所改进；在舱容计算中，在至少包括舱室前、后壁的范围内拟合横剖面积、面积矩曲线，插值求得任一纵向位置处的剖面，以解决舱室边界条件。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上，同时从菲涅尔透镜的光学原理出发，并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤，并在此基础上依据菲涅尔的设计思想，同时依据平面曲线的连续又呈螺旋的构思，推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式，并在此基础上讨论了这三种设计各自的优缺点。

She hated reading, or study of any kind, and loved society; rather than be alone she would admit Phoebe Marks into her confidence, and loll on one of the sofas in her luxurious dressing-room, discussing a new costume for some coming dinner party, or sit chattering to the girl, with her jewel box beside her, upon the satin cushions, and Sir Michael's presents spread out in her lap, while she counted and admired her treasures.

她厌恶读书或作任何钻研，她热爱社交；与其独自一人，她宁可把菲比·马克斯引为心腹；她在她奢华的化妆室里，懒洋洋地靠在一只沙发上，跟这姑娘讨论她要在某一个宴会上穿的一件新衣裳，或者坐着和这姑娘闲谈，珠宝匣放在身旁绸缎垫子上，迈克尔爵士送的少物摆在她的裙兜里，而菲比·马克斯则一件又一件的数着女主人的珍品，无限羡慕。

To cherish peace and friendly intercourse with all nations having correspondent dispositions; to maintain sincere neutrality toward belligerent nations; to prefer in all cases amicable discussion and reasonable accommodation of differences to a decision of them by an appeal to arms; to exclude foreign intrigues and foreign partialities, so degrading to all countries and so baneful to free ones; to foster a spirit of independence too just to invade the rights of others, too proud to surrender our own, too liberal to indulge unworthy prejudices ourselves and too elevated not to look down upon them in others; to hold the union of the States as the basis of their peace and happiness; to support the Constitution, which is the cement of the Union, as well in its limitations as in its authorities; to respect the rights and authorities reserved to the States and to the people as equally incorporated with and essential to the success of the general system; to avoid the slightest interference with the right of conscience or the functions of religion, so wisely exempted from civil jurisdiction; to preserve in their full energy the other salutary provisions in behalf of private and personal rights, and of the freedom of the press; to observe economy in public expenditures; to liberate the public resources by an honorable discharge of the public debts; to keep within the requisite limits a standing military force, always remembering that an armed and trained militia is the firmest bulwark of republic that without standing armies their liberty can never be in danger, nor with large ones safe; to promote by authorized means improvements friendly to agriculture, to manufactures, and to external as well as internal commerce; to favor in like manner the advancement of science and the diffusion of information as the best aliment to true liberty; to carry on the benevolent plans which have been so meritoriously applied to the conversion of our aboriginal neighbors from the degradation, and wretchedness of savage life to a participation of the improvements of which the human mind and manners are susceptible in a civilized state, as far as sentiments, and intentions such as these can aid the fulfillment of my duty, they will be a resource with can not fail me.

珍惜和平以及同所有有交往意向的国家的友好交往；对交战各国保持真正中立；在任何情况下，优先考虑以友善的讨论和理性来处理异议，而非通过武力来做出决定；排除外国阴谋和外国偏颇，这些对所有国家都造成堕落，对自由国家更为有害；培养一种独立的精神，其之公正不会侵犯他人权利，其之自豪不会丢弃自身权利，其之宽大不使我们自己纵养不值的偏见，其之高尚使我们蔑视他人的这些偏见；把众州的联合保持为众州和平和幸福的基础，拥护作为联邦链结的宪法，不论是其限制或权力；尊重保留给各州和人民的权利，因为它的重要性把它平等地纳入联邦总体的成功之中；避免最轻微的对良知权利和宗教功能的干涉，这些在民事裁判中豁免；代表私人和个人的权利以及媒体自由，以其全部的能量来保留其它相关有益条款；在公共花费中坚持节约；通过偿还公共债务来解放公共资源；在必要的限度下保持一支常备军，时刻要记住武装并训练过的民兵才是共和国的中流砥柱，即是，没有常备军他们的自由从未有危险，而有了一支庞大军队也未必安全，通过授权的手段来发展有益于农业，制造业，对外和对内的商业，以适当的方式支持科学的发展和信息的传播来作为真正自由的最好食粮；执行善意的计划以把我们的土著邻居从，野蛮生活的低贱和不幸中转化到参加入一个文明国家内人的思维，和举止都倾向的改良中--只要如此的思想，和意图能辅助我职责的履行，它们将成为不使我失败的资本。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。