薄壁

Thefeatures of floral and leaf morphogenesis , the variation of perforation plate of vessels ,the contact types between vessels and xylem parenchyma cells , the organic anatomy ofC .

本文从连香树花和叶的形态发生与发育，导管分子穿孔板韵变异，导管分子间以及导管分子与木质部薄壁组织细胞的接触方式，器官的解剖结构等方面进行了研究。

In order to research the ship ultimate strength, the ultimate strength of stiffened panel must be considered. And the web buckling and the stiffener tripping are the two main failure forms of stiffened panel. Based on the two main failure forms in this paper, according to the six failure modes of stiffened panel, the ultimate strength is solved by programming, and the failure mode is presented.

船体梁可近似看作是由加筋板组成的薄壁箱型结构，要研究船舶的极限强度，必须考虑加筋板的临界应力，而腹板屈曲和扶强材侧倾是加筋板的两种主要失效模式，本文在分析这两种失效模式的基础上，根据加筋板的六种失效模式，编程求解加筋板的临界应力，并给出其失效模式。

First, by the allocation of irrigation water directly into the ditch outlet Xiaqi, achieve no water loss, greatly improve the utilization of water; are two irrigation systems, replace the pipe with water furrow, not square, and the right to re-use, reducing the irrigation investment; Three is the use of the gate with the outlet opening to adjust a constant and accurate control of flow into the trench plot, for different soil and different groove specifications Xiaqi can greatly improve irrigation uniformity; four gates are porous pipe irrigation system for the flow tubes, and the blind to cross the flow tube as compared to the wall can reduce the work under stress, and reduce the damage to the opportunity to prolong the service life of thin-walled tube; are five gates to facilitate the installation of irrigation systems, pipes, and, upon request, to fight孔安outlet assembly to ensure the accuracy of positioning with the outlet.

一是灌溉水经配水口直接进入沟畦，实现无输水损失，极大地提高了水的利用率；二是管灌溉系统代替配水垄沟，不占地，且右重复使用，降低了灌溉投资；三是利用配水口的闸板开度来调节准确恒定地控制进入沟畦的流量，适用于不同土质和规格不同的沟畦，可大大提高灌水均匀度；四是闸管灌溉系统为多孔出流管，与等过流量的盲管相比，可降低管壁承受的工作压力，并减少受损机会，从而延长薄壁管的使用寿命；五是闸管灌溉系统安装方便，并可根据要求打孔安装配水口，确保配水口定位的准确性。

For many reasons, such as material, wall thickness, rigidity, clamp etc, during the course of treatment,assemblage and inventory,thin-wall rectangular deep recessed parts tend to generate distortion ,which induces increment of the processing technic establishing difficulty.

由于工件材料、壁厚、刚性、装夹等多种原因，薄壁矩形深腔体零件在加工、装配及库存过程中极易产生变形，导致编制零件加工工艺的难度增加。

Thin wall box shape section is a kind of structure generally adopted for machines.

薄壁多室箱形截面是机械结构中常见的一种结构形式。

The finite strip method is a numerical approach developed in recent years and has found wide use in the analysis of prismatic thin—wall structures such as the box girders for cranes.

有限条法是近年来发展起来的一种数值分析方法，特别适用于分析起重机箱形梁这样的棱柱形薄壁结构。

5Mm thin shell tube of copper and tube sheet of Q235in central air conditioner .

对薄壁铜管和碳钢管板组合管头的焊接难点进行了分析，制定了合理的焊接工艺，并成功地应用于中央空调器冷凝器和蒸发器的制造中。

In this paper, a new type of super element based on the thinwalled bars theory is presented for the lateral stability analysis of the reinforced concrete truss beam bridge with a box section.

寿楠椿 ，魏琴，周建春针对钢筋砼箱形截面桁梁桥的侧倾稳定性分析，提出一种基于薄壁杆件理论的新型超级单元。

The flexible workpiece vibration modes are available for partitioning the distinct machining stages that denote the dynamic variation characteristics of the workpiece in the process and for selecting the high-order dynamic frequency modes that can produce the displacement at the tool-cutting position as the virtual vibration modes to predict the cutting stability.

根据薄壁零件的振型模态，划分表示工件在加工过程中动态特性变化的不同加工阶段、选取能够在刀具切削位置激起振动位移的高阶动态频响模型作为预测切削稳定性的有效振型。

Three-Roll machines, used for both solid and hollow components, have pressures ranging from 10 to 100 tons and variants include Tube Fin Rolling machines up to 80mm diameter - and a 48-ton Five-Roll machine for rolling large diameter thin-walled tubes.

三辊设备可加工空心和实心的工件，压力范围10吨至100吨。其它设备包括直径可达80毫米的管尾滚丝设备和用于轧辊大直径薄壁管的48吨五辊设备。

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