薄壁

Based on detailedly analyzing the application and development of plastic heat exchangers at home and abroad, one approach was advanced that by substituting plastic heat exchanger made of thin wall and canaliculus PTFE plastic tube for the metal heat exchanger of traditional lithium bromide absorption cooler.

本文在对国内外塑料换热器的应用、发展进行详尽分析的基础上，提出采用薄壁小管径聚四氟乙烯塑料管制成的塑料换热器代替传统的溴化锂吸收式制冷机中的金属换热器，制作一台塑料管溴化锂吸收式制冷机及其实验系统的课题。

The characters of no-load member in closed complex structure and the reason of high-rigid of diagonal partition wall have been studied.

分析了组合封闭薄壁结构中无载构件的特性和对角筋板具有优良扭转刚度的原理，提出以结构的振型为依据，采用适当的筋板结构型式，可以提高结构的动刚度。

Thin-walled tube with closed section is commonly used in large space structures. In order to calculate the time-dependent temperature fields in these structures subjected to heat flux and emitting thermal energy by radiation, the temperature gradients along both the axes and circumferences of the tubes should be considered.

薄壁闭口管是大型空间结构中的常用元件，为准确地计算以其为组件的空间结构在太空辐射换热条件下的瞬态温度场，必须同时考虑沿管轴向与横截面周向两个方向的温度梯度。

Collenchyma A specialized type of parenchyma, usually located just beneath the epidermis, that functions as supporting tissue.

厚角组织：一种特殊类型的薄壁组织，通常位于表皮的下方，起支持作用。

Collenchyma and sclerenchyma may be present.

它一般由薄壁组织构成，但也包含其他组织。

Six parameters were determined,i.e.,cell layers of collenchyma and parenchyma,cell wall thickness of collenchyma,thickness of cortex layer and vascular bundle,and diameter of vessel lumen.

对厚角细胞层数、薄壁细胞层数、厚角细胞壁厚度、皮层厚度、维管束厚度和导管腔大小等6个参数进行了比较分析。

Based on the shell element degraded from the continuous body, concrete and configured steels are modeled by the layered shell element, and the vertical steels burdened with added loads are completed by the combined shell element. Then, with the smeared crack model, associated flow rule and Madrid hardening model, the material nonlinearity of the concrete is depicted. The stiffness matrix of nonlinear thin-walled shell element is deduced. As for RC multi-T girders subjected to transverse loads, the properties, such as crack expanding and steel yielding, are studied.

基于实体退化壳单元理论，采用分层单元模拟了混凝土和构造钢筋，采用组合单元模拟了受力纵筋；并利用弥散裂缝模型、关联流动法则和Madrid强化准则等来描述了混凝土的材料非线性，推导了非线性薄壁壳单元的统一单元模式，研究了横向荷载作用下RC多T梁上部结构的裂缝发展和钢筋屈服等性能。

Company dedicated to the research, development of a variety of basic materials for thin-walled stainless steel tube of the compound and has a number of National Invention Patent, the modernization of the factory has a 22 stainless steel tubes and stainless steel lined composite steel pipe production lines, to complete the 5000 tons of stainless steel tubes and 30,000 tons of stainless steel lined composite steel pipe production capacity.

公司致力于研究，开发各种以薄壁不锈钢为基础材料的复合钢管，并拥有多项国家发明专利，厂区拥有22条现代化不锈钢管和内衬不锈钢复合钢管生产线，能完成5000吨的不锈钢管和3万吨内衬不锈钢复合钢管的生产能力。

The performance of seepage prevention is an important index of the pond of thin wall of concrete.

防渗性能是混凝土薄壁水池的一项重要指标。

A curve coordinate system which is suitable for variable height curved box-girder were established. The flexure, torsion and distortional warping displacement functions were established, and the strain-deformation equations were obtained, a spatial finite element analysis method of trapeziform cross section variable-curvature box-girder with vertical symmetrical axis was also presented.

建立适合于变高度曲线箱梁的曲线坐标系，推导了变曲率、变高度箱梁弯曲、翘曲扭转和畸变的位移方程和应变-位移关系式，提出了具有一个竖直对称轴的变高度变曲率曲线箱梁的薄壁曲梁空间分析有限元方法。

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