压

In this paper, dry-type transformers 10kV-circuit the development of a load voltage change-over switch, which uses advanced power electronics and opto-mechatronics technology, with the non-excitation voltage regulating transformer is converted to on-load tap changer functions, solve of the non-excitation voltage transformer without power interruption can not adjust voltage, voltage regulator is not convenient, and the shortcomings in time, and have the best communication interface

本文针对10kV 无励磁干式变压器研制一种有载调压转换开关，它采用先进的电力电子技术和光机电一体化技术，具有把无励磁调压变压器转换为有载调压变压器的功能，彻底解决了无励磁调压变压器不停电不能调整电压、调压不方便和调压不及时的弊病，并具备完善的通信接口，可方便地嵌入配电系统的电压无功控制和电力监控中，提高了变压器供电系统的自动化水平。

The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. The model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20%.

复合塔板的压降可认为由干板压降、清液层阻力、填料层压降和克服液体表面张力的压降四部分组成，所建立的压降计算模型，能较好地预测复合塔板的压降，计算值与实验值误差在±20％以内，可用于工程设计。

At first, this paper conducts in depth research on classification method, compaction propeties, granulometric composition and crushing of stone. On the basis of clarifying engineering characteristics of material of rock-filling embankment, requirements of ground treatment have been put forword in this paper. Then combined with the site test and engineering practice in SHUINAN Road and LANLIN Road, through the synthetical analysis of factors of influencing densification effect for the maximum grain size of filling material, lay-down thickness, granulometric composition, densification machinery and densification frequency etc., this paper studies key technical problems about construction technologies for spreading and leveling of filling material, choosing densification machinery, densification technology and slope construction systematically. Finally, construction technologies of filling lime-stone and sand-stone roadbed have been proposed in this paper ,which are significant for quality guarantee of highway engineering.

本文首先从石料的分类方法、压实特性、粒径组成以及破碎性等方面进行研究，在明确填石路基填料的工程特性基础上，进而提出了填石路基的地基处理要求，然后结合广西水南路和甘肃兰临路填石路基试验路段上的现场研究，通过对填石路基填料最大粒径、松铺厚度、粒径组成，压实机械以及碾压遍数等影响压实效果因素的综合分析，系统研究了填石路基填料的摊铺与整平技术、压实机械选型技术、压实工艺以及边坡施工技术等施工工艺中的关键问题，最后提出石灰岩类和砂岩类填石路基的施工工艺要求。

And presents some commonly process and attentions in applying the FEM software ANSYS to PCM analysis.2 Analyzed the PCM performances under the affection of piezoelectric and polymer"s material characteristic by FEM, and got the rule.3 Analyzed the PCM performances which affected by stickup layer"s materials characteristic and its thickness under the application of FEM.4 Based on the construction principles of 1-3 type orthotropic piezoelectric composite materials, the finite element model is designed and its orthotropy is analyzed, at the same time, the length/broad ratio to PCM orthotropy is also analyzed.

二、应用有限元法分析了压电相材料和聚合物基体相材料特性对于压电复合材料综合性能的影响规律。三、应用有限元法分析了粘贴层的材料性质和厚度尺寸对压电复合材料在实际应用中性能的影响规律。四、根据提出的正交异性压电复合材料的构造原理，设计出1-3型正交异性压电复合材料的有限元模型并分析其正交异性，同时分析了压电相材料长宽比对其正交异性的影响。

The influence of the structure and material parameters on static and dynamic characteristics is studied. The three dimensional static analysis is obtained by the power series expansion method for a piezoelectric composite laminates. Three dimensional distribution of bonding stress, displacement and electric potential are presented. The distributions of electric potential across thickness of two kinds piezoelectric materials are discussed.

对于静态问题，采用三维精确解方法，给出了压电层与基体之间剪应力、位移、电势的三维分布图；讨论了工程中常用的两类压电材料在感知和作动情况下沿压电材料厚度方向电势的分布情况，分析了电势可看作线性分布的条件；讨论了压电层和粘结层的厚度及材料特性变化对压电感知和作动效果的影响，并对压电层的厚度作了优化分析。

Rubber machinepricision performer of rubber product,testing machine,fuel battery test press,double-unit vacuum molding machine,strapper for rubber joint.etc.

产品包括：橡胶机械（精密预成型机、平板硫化机、各种试验压机、燃料电池压机），电子机械（二极管注压机、高频预热机、线路板层压机、流动测试仪），木业机械（中密度板框式压机、可降解一次性餐具压机、自动进卸料送板机）及各种非标液压设备。

The minimum fluidization velocity has a minimum value when the frequency of sound waves is 120Hz and it will decrease as the sound pressure level increases. The degree of sound attenuation will increase while bed material is higher and the fluidization quality of fine particles will become poor and the minimum fluidization velocity will increase. Compared with TiO2, the SiO2 fine particles have a better quality of fluidization at the same fluidized conditions.The cluster/subcluster model and oscillators model are used to describe the fluidization characteristics of fine particles in a sound-assisted fluidized bed. The theoretical calculations show that the minimum fluidization velocity umf is decreased with the SPL increased at the same frequency of sound and the quality of fluidization is better.

论文还系统的考察了声压和频率对纳米SiO2和TiO2颗粒流化特性的影响，结果表明：在频率一定的情况下，声压越高，流化床中形成的聚团尺寸越小，最小流化速度越低，流化质量越好；当声压低于120dB时，声场对超细颗粒流化特性的影响减小，当声压大于130dB时，则能显著改善流化效果，使流化床内的颗粒聚团明显减小，最小流化速度明显降低，粉体带出减小；声压一定，频率为120Hz左右时，最小流化速度最低，此时流化床中形成的聚团尺寸最小，流化效果最好；超细颗粒达到较好的流化状态存在一个最佳频率范围，随着声压增高，这个频率范围将增大。

Brief introduction: Based on foreign advanced PE clapboard enveloper/stacker automatic line, selecting the main procedure, this machine is designed to meet the need of domestic storage battery factories-- production without maintenance and only with clapboard enveloping function. It is easy to operate and safe to adjust. When use the machine, you should put the board on the pushing board and push to the middle part, they will go into the press roller at the same time, the interlaced veins make the plates closely together, then stack the plates. The machine can be adjusted according to user's requirement

简介：本机在国外先进的 PE 隔板包封配组自动线的基础上，选取了包封工序之精华，设计出了适应我们国内蓄电池厂生产免维护的需要，只具有隔板包封功能的比较实用的隔板包装机，为蓄电池厂生产免维护蓄电池提供了 PE 隔板包封极板的可靠手段，该机操作简便、运行调整可靠，使用时将极板放在推板上，人工将极板推到隔板中部，经压辊将夹有极板的隔板同时进入压辊、压辊的两边有压纹使隔板上下经交错的压纹牢牢的压在一起，隔板形成口袋的状、然后人工配组极板。

Highway construction lacks quantitative technological guidance. At first, this paper conducts in depth research on classification method, compaction propeties, granulometric composition and crushing of stone....

本文首先从石料的分类方法、压实特性、粒径组成以及破碎性等方面进行研究，在明确填石路基填料的工程特性基础上，进而提出了填石路基的地基处理要求，然后结合广西水南路和甘肃兰临路填石路基试验路段上的现场研究，通过对填石路基填料最大粒径、松铺厚度、粒径组成，压实机械以及碾压遍数等影响压实效果因素的综合分析，系统研究了填石路基填料的摊铺与整平技术、压实机械选型技术、压实工艺以及边坡施工技术等施工工艺中的关键问题，最后提出石灰岩类和砂岩类填石路基的施工工艺要求。

It is extremely convenient to use this SL253 presser. A sample piece can be pressed with just one pull of the handle, which is much more convenient than pressing with other pressers which need several or scores of actions of the hands. It is almost as convenient as an automatic sample presser, and is more economical than it because a automatic sample presser is more expensive and is easy to have motor failure.

SL253型压片机使用极其方便，只要用手扳一下，即可完成压样，相比其他手动压片机需压几下甚至几十下要方便得多，相比自动压片机也差不多，但自动压片机电机等容易出现故障且价格较高，所以在性价比上更胜过自动压片机。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。