变变

The plastic deformation induced due to cyclic rotation of principal stress axes alone can be in the same magnitude as that due to shear with fixed principal stress axes. 2 The volumetric strain due to shearing of cyclic rotation of principal stress axes is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. The former is characterized by its reversibility and is independent of past shear history, the latter by its irreversibility increases with the increase of cycle number yet its increase rate decreases with its accumulation. 3 The obvious non-coaxiality between directions of the principal stresses and principal strain increments is found and its degree depends largely on the change of shear stress component. 4 The intermediate principal stress has considerable effects on the deformation behavior of sands in the condition of cyclic rotation of principal stress axes. The accumulation rate of the irreversible dilatancy component increases with the increase of the intermediate principal stress parameter.

具有初始各向异性的砂土在纯应力主轴循环旋转排水条件下的主要变形规律为：①纯应力主轴循环旋转可产生与应力主轴固定单调剪切处于同一数量级的塑性变形；②纯应力主轴循环旋转引起的剪切体变包含可逆性剪切体变分量和不可逆性剪切体变分量两部分，其中可逆性剪切体变分量在一周内可完全恢复，基本与应力历史无关；不可逆性剪切体变分量随循环周数的增加呈单调增加，且增加速率随其自身累积值的增大呈减小趋势；③应变增量主轴与应力主轴之间的非共轴现象显著，且在一周内具有分段性；④中主应力对应力主轴循环旋转条件下砂土的变形特性有重要影响，不可逆性剪切体变分量的累积速率随中主应力系数的增加而增加。

The research is carried on from four aspects. One is, based on answering the above open problem on a finite dimensional Euclidean space by means of partially ordered theory, to research the existence of solutions, global error bounds of proximal solutions and sensitivity of parametric unique solutions and present a class of variable-parameter three-step iterative algorithms for generalized set-valued variational inclusion problems by using - resolvent operator of set-valued mapping.Two is to consider the convexity, closedness and boundedness of the solution set of general set-valued variational inclusion problems and the sensitivity of the parametric solution set by means of graphical convergence theory. Three is to discuss directly the existence of solutions by using analytical methods for set-valued mixed quasi-variational-like inequalities and suggest a class of direct variable-parameter three-stepiterative algorithms for solving generalized set-valued variational inclusions.

研究分有三个方面：一是借助于偏序理论在有限维欧氏空间中解决了上述公开问题，在此基础上利用集值映射的η-预解算子，研究了广义集值变分包含问题解的存在性、逼近解的全局误差界、参数唯一解的灵敏性，并提出了一类变参数三步迭代算法；二是借助于图收敛理论研究了一般集值变分包含问题解集的凸性、闭性和有界性以及参数解集的灵敏性；三是用分析的方法直接讨论了集值混合拟类变分不等式问题解的存在性并提出了一类求解广义集值变分包含问题的直接变参数三步迭代算法。

In this paper, the jump transition characteristic of sunspot cycle length from 522BC upward were analyzed.

讨论了2500多年来太阳黑子周期长度的跃变特征，发现在百年尺度上SCL基本在平均值附近变化，而其变率则存在明显的跃变现象，当SCL的变率增大时，气候随之发生冷跃变，反之，则发生暖跃变。

According to the browning phenomenon of Castanea mollissima in plant tissue culture and the activity of the peroxidase and polyphenolic oxidase, the results of my study indicated that the activity of PPO has relativity with the browning of the callus, that is the higher activity of enzyme,the more severity of browning.But POD was not as PPO.

本文对褐变的机理进行初步研究，分别统计和测定培养期间褐变率、PPO活性、POD活性，研究培养过程中酶的活性变化与外植体褐变的关系，结果表明：板栗组织培养过程中，PPO活性与褐变存在显著的相关关系，PPO活性高的处理其褐变率也较高，POD活性与褐变之间无相关性。

In the eight ieth, variational inequa1 ity hasits important development phase and there were suchvari ati ona1 inequa1 it ies as vector vari at ionalinequal ity, general variati ona1 inequal ity quasi-variationa1 inequal ity, 1 ike--variat iona1 inequal ity andgenera1 ized vari at iona1 inequa1 ity.

八十年代为变分不等式问题的很重要的发展阶段，出现了一系列的变分不等式，如向量变分不等式、一般变分不等式、拟变分不等式、类变分不等式及广义变分不等式。

the incidence of inhalant allergen is higher than ingestive allergen. acaridan is the major allergen in haikou area and thus effective measures be made to prevent the occurrence of allergic dermatosis.

吸入性变应原是海口地区变应性皮肤病主要变应原，其发生率高于食入性变应原，螨是海口市变应性皮肤病的主要变应原，其次为屋尘、猫、狗皮屑。

Secondly, organical composite thermal storage materials which takethe PNIPAAm gels as the carriers and the palmitic acid and the lauric acidmixture for phase change materials were Synthesized by radicalpolymerization ,and organical/inorganical composite materials which takeP(NIPAAm-co-AAm) gels as the carriers and the palmitic acid、thelauric acid and Na_2HPO_4·12H_2O mixture were also Synthesized byradical polymerization.

其次，本文采用自由基聚合法，合成了以PNIPAAm凝胶为载体，棕榈酸和月桂酸的混合物为相变材料有机复合相变蓄热材料；及P(NIPAAm-co-AAm)凝胶为载体，棕榈酸、月桂酸和Na_2HPO_4·12H_2O为相变材料的有机／无机复合相变蓄热材料，采用红外光谱、示差扫描量热法、热重分析、扫描电镜等手段对两种复合材料的结构及热性能进行了表征与分析，研究了有机酸和无机盐的百分含量对复合材料的相变温度和相变焓的影响。

Then detailedly introduces the principle of pole-changing modulating speed and design feature in times pole proportion and non times pole proportion in the Mixed pole-changing simplex winding multispeed asynchronous motor , carry on discuss to the main parts of electrical machinery electromagnetism computation; by using VISUAL BASIC under WINDOWS platform for computer-aided design method for the mixed pole-changing simplex winding multispeed asynchronous machine, carries on profound analysis for the computer-aided design in the following aspect such as rotor and setting flush piece size, groove shape size, the rotor and setting winding connection, and start performance.

本文在介绍了单绕组多速电动机的概况，阐述了目前多速电机的发展现状与前景；利用槽号相位图以及混相原理对变极绕组进行了研究，确定了绕组的混相方案；并详细地介绍了混相变极单绕组多速电机在倍极比与非倍极比时的变极调速原理以及设计特点；对电机电磁计算的主要几个部分进行了讨论；介绍了使用WINDOWS平台下的VISUAL BASIC对混相变极单绕组多速异步电机的计算机辅助设计方法，对混相变极单绕组多速异步电机的定转子冲片尺寸、槽形尺寸、定转子绕组接法、定转子相带、起动性能的几个方面的计算机辅助计算进行了深刻分析；最后，对混相变极单绕组多速异步电机的样机检测试验结果进行了分析。

The ideological and political education urgently awaits to transform the education way,such as changing the behavior passively to be initiative for the behavior,changing instills to unblocks,changing hypothesized to the reality,changing the spot to surface,changing unidirection to bidirection,changing sole to compound,usin...

高校网络思想政治教育亟待转变教育方式，要变被动为主动，变灌输为疏导，变虚拟为现实，变点为面，变单向为双向，变单一为复合，利用网络，依靠网络，以达到增强思想政治教育渗透力之目的。

The results indicate that in the synchronizing condition the MRF is unyielded, every point of MRF in the flow field has the same angular velocity. Under the slipping condition, with the increase of magnetic field or the decrease of slip speed, MRF may transfer from whole yield to partial yield. When the MRF wholly yields, the angular velocity of MRF increases nonlinearly with its radius, the non-linear distribution becomes more obvious as the magnetic intensity in the working gap increases. When the MRF partially yields, the yield region expands with the decrease of magnetic intensity or the increase of slip speed and the unyield region always reaches the driven rotor. The transfer torque of MRTD increases with the increase of the external magnetic field, but the transfer torque maintains a constant value approximately with the variation of slip speed at the same magnetic intensity.

研究结果表明，在同步工况下，传动装置流场中磁流变液未屈服，各点角速度相同；在滑差工况下，随外加磁场的增大和滑差转速的减小，磁流变液逐渐从完全屈服向部分屈服转变；磁流变液完全屈服时，磁流变液角速度随半径呈非线性增加，工作间隙中磁场越强，流场的非线性分布越明显；磁流变液部分屈服时屈服区域随外加磁场的增大而减小，随滑差转速的增大而增大，未屈服区与主动转子相连；稳态下磁流变传动装置传递的转矩随外加磁场的增加而近似呈线性增大，但在相同外加磁场下，传递转矩基本不随滑差转速改变而改变，表现出良好的恒转矩特性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。