下壳

In this paper, a general, strain-consistent, third-order displacement field of shells is proposed. On this basis, the nonlinear theory of composite laminated shells including third-order transverse shear deformation and rotary inertia is developed. Hamilton's variational principle is used to derive the nonlinear static and dynamic governing differential equations and the corresponding boundary conditions of composite laminated anisotropic general shells under the orthogonal curvilinear coordinates. And the form of spherical shells is degenerated.

本文提出了一种最普遍的应变协调、三阶壳体位移场，在此基础上建立了考虑三阶横向剪切变形和旋转惯性的复合材料层合壳体非线性理论，用Hamilton变分原理导出了复合材料层合各向异性任意壳体在正交曲线坐标系下的非线性静、动力控制微分方程和相应的边界条件，并将其蜕化为球壳形式。

By introducing reasonable fundamental assumptions and the Green strain in orthogonal curvilinear coordinates,geometric equations expressed by the Green strain tensor for solving thin shells with large deformation are derived in this paper.

将正交曲线坐标下的格林应变张量引入到薄壳大变形分析，通过建立恰当的基本假设，直接导出了用格林应变张量表示的壳体变形几何方程，将该方程代入到本构方程，由能量原理得到了小应变非线性变形平衡方程、内力方程和边界条件，在此基础上提出了大应变变形的简化分析方法。

All is done in the mapping plane about the developed plane of acylindrical shell.Furthermore,applied orthogonal function expansion technique,the problem can be finally summarized into the solution of a series of infinitealgebraic equations.

在第四章中，在保角映射平面上给出了大开孔圆柱壳在外部载荷作用下，广义内力、边界条件以及孔边应力集中系数的一般表达式。

Carbon dioxide layers have been encountered in the Ordovician weathering crust of Lower Paleozoic and in Es13 of Paleogene.

东濮凹陷在下古生界奥陶系风化壳与下第三系Es13地层发现了高含CO2气层。

The asymptotic solutions of non-uniform conical shells under arbitrary boundary conditions are determined by double-parameter perturbation technique and transfer function method.

利用摄动方法，将微分方程进行双参量摄动，采用传递函数法对所得到的摄动方程进行求解，得到了变厚度圆锥壳在任意边界条件下的渐近传递函数解。

The study on the mechanism of petrogenesis of high-Fe magnesian magmas is important to understand the tectonic regime of magmas in depth, early evolution of crust, the heterogeneity of lower mantle and the interaction of core-mantle. Meanwhile, it is also most significative for us to understand the petrogenesis of high-Fe magnesian rocks discovered from southern Taihang Mountains and other regions, in China.

其成因机制的研究对于理解其岩浆深部构造背景、早期壳－幔演化、下地幔组成不均一性和核幔相互作用有着重要意义；同时，对于最近在我国南太行山地区及其它地区发现的具有高铁镁特征岩石的研究具有极其重要的意义。

The study on the mechanism of petrogenesis of highFe magnesian magmas is important to understand the tectonic regime of magmas in depth, early evolution of crust, the heterogeneity of lower mantle and the interaction of coremantle. Meanwhile, it is also most significative for us to understand the petrogenesis of highFe magnesian rocks discovered from southern Taihang Mountains and other regions, in China.

其成因机制的研究对于理解其岩浆深部构造背景、早期壳—幔演化、下地幔组成不均一性和核幔相互作用有着重要意义；同时，对于最近在我国南太行山地区及其它地区发现的具有高铁镁特征岩石的研究具有极其重要的意义。

Under its influences, most theatrical works lost the poignancy and candor of the New Era. What remains is an empty shell echoing with the main melody.

在其影响下，绝大多数剧作丧失了新时期的深刻与真诚，只剩下失去灵魂的空壳，壳中回荡着主旋律的声音。

Under the same conditions, v of lherzolite is highest, that of pyroxenite comes next and that of basalt is lowest.

在1.4GPa压力下获得二辉橄榄岩和辉石岩的弹性波速分别为7.87km/s和7.47km/s，最接近壳幔过渡带的弹性波速。

The polymeric soil amendmentswere applied in increasing soil value,and reclamation of saliane sodic soil,and greeningdesert,and controlling water and soil erosion,and amending arid and semiarid soil,andincreasing fertilizer utilization rate and crop yield,etc.

本文研究了淀粉接枝共聚物、羧甲基纤维素接枝共聚物、壳聚糖接枝共聚物、聚丙烯酰胺及其衍生物等对赤红壤的改良作用，揭示了赤红壤在这些聚合物作用下理化参数的变化规律。

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