层

Choosing displacement of each layer regard as generalized coordinates of the system, Lagrang＇ s equations of the system are established.

结果表明：系统具有一个共振频率，容器的底部以这个频率竖向振动时，各粉末层的加速度达到各自的最大值；当容器的底部以共振频率竖向振动时，各粉末层的加速度是不相同的，当拱所在的那一粉末层有最大的振动加速度时，拱最可能被破碎。

The paper puts forward the regionalization principle according to the structural feature of geographical spatial environment.

本文根据地理空间环境的结构特征提出了分区的原则，在分析研究内容的主要影响因子的基础上，利用多种数据源，在分区指标的支持下进行空间叠置分析，建立采样均质区，形成样点布设支持的空间背景数据库；同时，本文利用组件式地理信息系统的二次开发能力，设计了多种针对采样均质区自动样点布设的方法，样点布设的结果是形成一个点状空间图层；针对如何定位预先设计的采样点问题，本文又提出了采样导航的概念，它是通过GPS和GIS集成实现的，定位信息经过投影转换，实时显示在采样点空间图层上，参照道路、居民点等背景图层进行采样点定位，并根据空间搜索实时寻找最近采样点，当到达采样点时予以提醒，并进行相关的采样。

The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop.

中胚层中间胚芽层，位于外胚层和内胚层之间，最终发育成结缔组织、肌肉、骨骼、泌尿系统及循环系统

The middle germinal layer of an early embryo, consisting of undifferentiated cells destined to become the ''.

中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成

The middle germinal layer of an early embryo,consisting of undifferentiated cells destined to become the mesoderm.

中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成

Main body steel structure forms the overall giantism space shape of a saddle steel truss weaving dyadic "bird nest" structure , steel structure always uses steel amounts to be 42,000 tons , mark, concrete bleachers having been , is hit by , three tiers down, bleachers concrete structure is 7 tiers of ground armoured concrete frames- shearing force wall structure system undergroundly 1 tier.

主体钢结构形成整体的巨型空间马鞍形钢桁架编织式"鸟巢"结构，钢结构总用钢量为4.2万吨，混凝土看台分为上、中、下三层，看台混凝土结构为地下1层，地上7层的钢筋混凝土框架-剪力墙结构体系。

Four main formations of loop bedding in Jiyang sub-basin were upper layers fall down in the process of earthquake, tautening distortion due to earthquake, the frication of earthquake-related surface of fault and the effect of redox and diffuse other formations of loop bedding comprise the effect of earthquake wave, the effect coming from circumrotate of globosity rotation, snowball function, cementation intermittent, the effect of biology, and so on.

综合分析认为震动塌落、震动拉伸变形、地震断裂面的摩擦作用、氧化还原反应和扩散作用是环状层理的主要成因，前三种成因的环状层理往往与其他震成构造伴生，可作为震积岩的良好标志。环状层理的其他成因还包括：地震波传播方式的影响、地球自转产生的涡旋的影响、"滚雪球"效应、间歇胶结作用以及生物成因等。

Abrupt fluid contacts indicate a permeable reservoir;gradational ones indicate a low permeability with a high capillary pressure.

突变的流体界面表层储层具有很好的渗透率，而渐变的流体界面表明储层的渗透率较差，且储层的毛细压力较高。

Because a certain number of ground movements, the higher floors lower rent, but Swire "Festival Walk" a fifth shopping mall, through architectural design arrangements for the different modes of transport can reach the different floors, so that each can give our customers just cause "ground" feeling, the rent gap is not so great.

因为一层地面客流肯定最多，楼层越高租金越低，但太古的"又一城"总共五层商场，通过建筑设计安排让不同的交通工具都可以到达不同的楼层，这样每层都能给刚进来的顾客造成"地面"的感觉，租金落差就不那么大了。

The improved e-N method can also yield results well agree with those obtained by DNS.4 The transition prediction for boundary layers on cones with different key parameters such as angle of attack, cone half angle and the Mach number of the coming flow, have been made, to show the reliability of the modified e-N method.5 For the calculation of base flow, boundary layer equations can be used in the case of small angle of attack.

但是它要依赖于对初始扰动的正确预估，这显然又取决于更多飞行数据的积累和分析。e-N方法的转捩预测结果与直接数值模拟得到的结果也吻合较好。4通过对不同来流攻角、不同半锥角和不同马赫数的三维圆锥边界层的转捩位置进行预测，证实了改进的e-N方法对于三维边界层转捩预测是可靠的。5对于基本流的计算，边界层方程可以用于小攻角的情况，其计算量远远小于直接数值模拟，但背风面的剖面不可靠。

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