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So before applying Mather's theorem of connecting orbits to concrete Hamiltonian system, we have to check whether the set W〓 is empty or not, and which cohomology classes are C-equivalent. In present paper, by investigating the topological structure of action minimizing sets near a co-dimensional one torus which is preserved under generic perturbations and becomes hyperbolic in nearly integrable Hamiltonian system.

与传统的Poincaré-Melnikov方法相比,我们方法明显优越之处在于,一方面我们的方法不仅可以得到双曲环面之间的异宿轨道,而且当该环面附近的其它环面破裂时,可以得到不同Mather集之间的连接轨道,另一方面,我们把异宿轨的存在性的证明转化为双曲环面极小同宿轨的某种弱孤立性的证明,所需条件比Poincaré-Melnikov方法弱得多。

A sofa upholstered in prune plush had been translocated from opposite the door to the ingleside near the compactly furled Union Jack (an alteration which he had frequently intended to execute): the blue and white checker inlaid majolicatopped table had been placed opposite the door in the place vacated by the prune plush sofa: the walnut sideboard (a projecting angle of which had momentarily arrested his ingress) had been moved from its position beside the door to a more advantageous but more perilous position in front of the door: two chairs had been moved from right and left of the ingleside to the position originally occupied by the blue and white checker inlaid majolicatopped table.

412一把深紫红色长毛绒面沙发从门对面被搬到炉边那面卷得紧紧的英国国旗近旁(这是他曾多次打算要做的变动)。那张嵌有篮白棋盘格子花纹的马略尔卡瓷面桌子,被安放在深紫红色长毛绒面沙发腾出后的空处。胡桃木餐具柜(是它那凸出来的犄角一时挡住了他往里走着的脚步)从门旁的位置被挪到更便当却更危险、正对着门的位置去了。两把椅子从壁炉左右两侧被搬到嵌有蓝白棋盘格子花纹的马略尔卡瓷面桌子原先所占的位置去。

This method undertakes comparative getting the area between the spare parts to equation of geometry of the face in model of CAD of different spare parts above all - surface contact relation and type, use amount coming back theory general face - the face expresses to be helix; relative to instantaneous motion next, the helix that goes up to many surface contact undertakes making operation,; of helix of the motion when making the opposite very short time between the spare parts is final, according to the spare parts abut concern plan and abut spare parts move relatively helix, undertook an analysis to assembling instantaneous of whole of the spare parts in the model to concern with drive movably, give out not between the method of calculation of helix of opposite instantaneous motion between photograph adjacent spare parts and them but the judgement method of drive sex.

该方法首先对不同零件CAD模型中面几何方程进行比较得到零件之间的面-面接触关系和类型,并应用旋量理论将面-面相对瞬时运动表示为螺旋;然后,对多个面接触上的螺旋进行交运算,生成零件之间的相对瞬时运动螺旋;最后,根据零件邻接关系图和邻接零件相对运动螺旋,对装配模型中零件整体瞬时可动性和驱动关系进行了分析,给出不相邻零件之间的相对瞬时运动螺旋计算方法和它们之间可驱动性的判定方法。

SEM results show that the morphology of the anhydrous magnesium carbonate is a well-crystallized multiple layer parallelepiped .

SEM 结果显示无水碳酸镁呈结晶良好的多层平行六面体形态,该平行六面体的底面近似于菱形,边长约为20μm,六面体的侧棱长约20~25μm。

In this study, we used the couple-mode theory for the simulation. We select the profile index of multimode fiber, profile index of mode conditioning patch cord and VCSEL output power as parameters for the simulation. The influence of using mode conditioning patch cord to the modal noise and modal coupling efficiency is showed.

利用模态耦合理论(Couple-Mode Theory)搭配多模光纤之折射率分布指数、多模模态调整转换跳接线之折射率分布指数及面射型雷射之模态分布,作为模拟计算依据,并利用OptSim模拟软体来模拟850nm面射型雷射与50μm多模光纤之光输出耦合情形。

It is found that there is a mineral association, micro-crystal muscovite and phengite, in this deposit. The mineral assemblage contains about 80% micro-crystal muscovite and about 20% phengite. Their crystallinity is very high and their polytype is 2M1. Both of them are dioctahedral because the d and b of micro-crystal muscovite and phengite are 0.1502 nm, 0.9012 nm and 0.1505 nm, 0.9030 nm, respectively. For their d and b are larger than those of common muscovite, the reason why Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+) are high in the ore is that Al(superscript 3+) in the octahedron is replaced by Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+), and this is a phengite series mineral association formed through isomorphic replacement.

该矿物组合中的微晶白云母和多硅白云母结晶度高,多型为2M1,其含量分别为80%和20%左右;二者都属二八面体型白云母类矿物,但d060和b值偏大,微晶白云母的d060=0.1502nm,b=0.9012nm,多硅白云母的d060=0.1505nm,b=0.9030nm;微晶白云母矿铝含量较低、铁镁含量较高,其原因是白云母晶体铝氧八面体中的Al离子被Fe、Mg等离子所取代,这一矿物组合是通过矿物类质同象作用所形成一种多硅白云母系列矿物。

Based on a hypothesis of function-equivalence which occurred not only in the mental folding but also object folding for individuals, this research indicated that individuals will search a fixed undersurface to fold up adjacent surfaces. Therefore, the type of unfold cube which had less undersurfaces and more adjacent surfaces could be more quickly for individuals to identify its undersurface, complete the mental folding and have better performance.

研究者以个体心像摺合时会与实物摺合存在功能相等性的假设,认为个体在心像摺合时会先寻找一个固定底面,再一起摺合所有邻面,因此底面数较少、邻面数较多的展开图类型会较快判定底面并完成心像摺合,而有较佳的表现。

There are two methods are often used. A method is constructing some separate polyhedrons from vertex and edges of 3D wire-frame and combine the polyhedrons with each other one by one. Another is extracting wire-frame to some candidate faces and joining them up according to the nature of 3D object.In this paper, an algorithm of reconstructing 3D object from wire-frame was put forward.

目前有两种方法:一种是把三维实体看成由多个多面体组成的,相应的方法是将线框模型拆分成多个多面体,然后进行多面体的拼接组合重构三维实体;另一种方法是把三维实体看作由多个面组成的,相应方法是搜索可行面并根据三维实体的特点来重构。

Most of the recent domestic researches with the Balanced Scorecard approach were more concern with its merit and benefit than its application, which faced difficulty. With this understanding, this article chose a local dominant manufacturer in decoration materials as a study case to review its application of balance idea from the four prospective, which are financial prospective, customer prospective, business process prospective, and learning and growth prospective, of Kaplan and Norton.

中文摘要考量国内目前相关绩效衡量指标之文献与研究,多以探讨企业导入平衡计分卡的优点及效益为主,对於企业於推行及应用时,所面临的困难及问题探讨并不多,同时由於产业的属性及经营方式多有不同,所以更可能同时发生技术面、人为面、组织面的问题亦未深入处理。

Multiple-paths hydrogen abstraction reactions of fluorine -with CH_3OH have been investigated at the MP2/6-311 ++ g level. The potential energy surfaces for H-abstraction reaction from carbon atom and oxygen atom were given respectively. The results indicate that there is only one minimum energy path for hydrogen abstraction from carbon atom, while multiple paths were found for hydrogen abstraction from oxygen atom. All the stationary structures, frequencies as well as PES sketch of all channels were given, in which the dominant channel is by a five-member ring transition state. The calculated heat of reaction is 170.62 kj/mol for channel 1, 119.41 kJ/ mol for branch channel 6. The results are in good agreement with experimental data.

以MP2/6-311 ++g水平上详细研究了氟原子与甲醇抽氢反应的多通道反应机理,得到了各条通道中涉及的驻点的构型和振动频率及其能量,给出了两张完整的反应势能面,结果表明,氟原子从C原子上抽氢时有一条明显的最低能量通道,而从氧原子上抽氢时要涉及多条分支通道和多个驻点构型,给出了各分支通道势能面示意图,结果表明以形成五元环状过渡态通道为优势通道,计算得到经途径1生成CH_2OH时反应放热170.62kJ/mol,经分支途径6生成CH_3O自由基时反应放热119.4 kJ/mol,此结果与实验值一致。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。