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The origin、 development and present state of the container ship2. The deformation characters and collapse mode of the container ship3. The basic theory of thin-walled structural mechanics: The bending of the thin-walled beam; The unconstrained torsion of the thin-walled member bar; The constrained torsion of the thin-walled member bar with opening; The constrained of the thin-walled member bar with closed port.4. The calculation of the warp stress in the container ship based on the thin-walled structural mechanics theoryModeling of the hull ladder calculation based on referred mechanics theories of thin-walled member bar, calculation of crankle character of the each section, such as sectional coordinates、 Free twist shear flow、 secondary shear flow、 bend shear flow and so on.

本文主要包括下述六个方面的内容: 1 集装箱船的起源、发展和现状 2 集装箱船变形特征和破坏形式 3 薄壁结构力学的基本理论◇薄壁梁的弯曲;◇薄壁杆件的自由扭转;◇开口薄壁杆件的约束扭转;◇闭口薄壁杆件的约束扭转 4 利用薄壁结构力学理论计算集装箱船的翘曲应力建立船体阶梯计算模型,利用薄壁杆件力学中相关理论,求解各断面单元的弯扭特性,包括:扇性坐标、自由扭转剪流、二次剪流、弯曲剪流等。

Results:compared with the torsion/orchiectomy group,the biochemical parameters and histological grades in the torsion/detorsion group increased in different degrees, and the prognosis status demonstrated by the number of spermatogenic cell associated with the decreased mean diameter of the seminiferous tubule, there are a worse prognoses in the torsion/detorsion group.

与扭转切除组比较,扭转复位组对侧睾丸的mda、il-6值、病理评分等均有不同程度升高,且1周时生精细胞层数结合精细小管直径所示的预后情况亦较差;而各指标在扭转切除组与假手术组的相比中未示明显差异。

The natural twist vibration equation is set up by making use of the constitutive relation of nonlinear material.

利用非线性材料的本构关系,建立了非线性材料圆杆的扭转固有振动方程,然后采用傅立叶级数法求得了圆杆扭转固有振动的所似解,通过实例计算讨论分析了非线性材料圆杆的扭转固有振动特性。

By applying one couple of unit force on two suspension centers based on 3D FEM to calculate their relative displacement, coefficient of torsion displacement, the radial gate s torsional rigidity coefficient is derived; and its stress distribution is analyzed to solve radial gate s torsion problem.

基于空间有限单元法,对闸门吊点施加1对单位力计算出2个吊点的相对位移———闸门扭转挠度系数,进而推算出闸门抗扭刚度系数和单位位移下的应力状态,据此最终解决弧门的扭转问题。并通过某一工程实例的分析计算,表明该方法在生产设计中具有较好的实用性,可以有效地解决弧形闸门的扭转计算问题

Limit,torsion modulus of elasticity, modulus of rupture in torsion, and Torsional Strength.

应力-应变图,以测定扭转弹性极限、弹性模量,扭转中的断裂模量和扭转强度。

Through the analysis of the torsional stress produced in the open sections vehicle frame s under typical operation conditions the calculating formula is achieveal,which leads to the stress distribution of the open section frame and the ideas of improving the distribution of the torsional stress are discussed.

通过对常见开口截面车架在典型工况时扭转应力的分析,推导出扭转应力计算公式,从而得出了开口截面车架的一些应力分布规律,提出了改善车架扭转应力分布的具体措施。对汽车车架设计方案的拟定和车架应力分析具有指导作用

The calculations of torsional vibration of crankshaft systems of 12V240ZJ6E diesel engines were carried out with TVCA programme and I deas software to obtain system natural vibration frequencies, vibration amplitudes of various concentric masses at different rotational speeds, and torques and torsional stress es of various crankshaft sections at different rotational speeds.

运用TVCA程序和Ⅰ deas软件对 12V2 4 0ZJ6E型柴油机轴系的扭转振动进行计算,求出系统的自振频率、各集中质量在不同转速下的振幅和各轴段在不同转速下的扭矩、扭转应力值,对自振频率、自由端振幅和扭转应力最大轴段进行了分析,对轴系的扭转振动情况作出总结与评

The determination of AHT value mathematical formula is one of the mo-st important problems during the design of three dimensional software packagfor directionally drilled well.

在研究定向井三维设计软件包时,软件设计程序要满足全方位的扭转中的一个重要问题就是如何确定最终方位角AHT值数学表达式;本文针对定向井在全方位扭转条件下扭转后最终方位角的变化规律进行深入研究。

In chapter 2, based on analysis for the existed methods of torsional vibration measurement, a novel measuring method, parallelling dual-beam laser doppler torsional vibration measurement is first put forward by the author, it not only divides translation and rotation of the rotor, but also can be used to measure torsional vibration of non-cylinder rotor.

本文的第二章在分析现有扭转振动测量方法的基础上,首次提出平行双光束激光多普勒扭转振动测量方法,它不仅解决了转子平动与转动的完全分离,还能测量各种非圆形截面转子的扭转振动;为辨别转子的转动方向,还提出双频激光多普勒测振仪,满足故障诊断对测量启、停转子和转速方向变化转子性能的要求。

Methods The pedicle of the ovary tumour by operation pathological confirms reverse 46 examples, 10 examples among them are incomplete torsions, 36 examples are to reverse completely, and to carry out by the abdomen route.

选择经手术病理证实的卵巢肿瘤蒂扭转46例,其中10例为不全扭转,36例为完全扭转,并对其经腹超声检查图像进行综合分析。

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。