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The present paper design content is the expandable belt feedingengine, is transmits the force of traction through between thetransmission drum and adhesive tape's friction force, concurrentlymakes the hauling organization and the load bearing organizationone kind by the adhesive tape for the material equipment, expandsand contracts the arm rear part establishment to have theexpandable hydraulic prop, causes the complete machine lengthnimble elongation or the reduction, between the supporting rollerthe included angle increases to causes the belt fastenerinclination angle to be possible to amount to 25 degrees, has forestimates in a big way, the transportation is steady, the serviceis convenient, the area slightly and so on characteristics, bringsconveniently to the load, can the widespread application in eachkind of bulk collection and distribution center productionscene.

本论文设计内容是可伸缩带式给料机，是通过传动滚筒与胶带之间的摩擦力来传递牵引力，以胶带兼作牵引机构和承载机构的一种给料设备，伸缩臂尾部设置有可伸缩的液压支柱，使整机长度灵活的伸长或缩短，托辊之间夹角增大可使皮带机倾角可达到25度，具有给料量大，运输平稳，维修方便，可多点卸料，占地面积小等特点，给装车带来方便，能广泛的应用于各种散料集散地的生产现场。

Due to the high reliability, high stability and low EMI criterions in auxiliary power supply systems, the half-bridge LLC resonant converter is selected for the front-end converter, the AC bus architecture and full-wave rectifier are as well utilized. The turns-ratio between the AC bus and load converter is 1:1. The effect of beads which are used in the load converters to the resonant circuit is analyzed.

根据辅助电源高可靠性、高稳定性、低电磁干扰、良好的高频隔离的要求，通过对不同拓扑类型的分析比较，选择半桥LLC谐振变换器作为前级变换器，交流母线和零式全波整流结构作为后级变换器，在母线和后级变换器的连接上采用1∶1的隔离变压器连接。

New multi—objectives function (including mill stand longitudinal stiffness, distribution coefficient of loaded pressure between rolls, weight of mill stand, rolling power, rolls loaded gap profile changeability of bending force, transverse mill stand stiffness of bending force, transverse mill stand stiffness of rolling load) multi—constraints (including rolls strength, spindle strength, backup roll bearing load, minimum rollable gauge, roll surface temperature rise) rolls system parameters optimization model of four—high cold strip mill is established, and programme for mill structural illustration creation on the platform of AutoCad designs is compiled. With this as basis, rolls system parameters of Yichang thin strip corporation's 1219 cold mill are calculated using SUMT (subsequent unconstrained minimization technology).

本文建立了以板形和板凸度控制特性为目标的四辊轧机多目标函数（包括轧机纵向刚度、辊间压力分布系数、轧机重量、功率、弯辊力对轧机辊缝形状改变能力、对弯辊力的横向刚度、对轧制力的横向刚度）、多约束条件（包括轧辊强度、接轴强度、支承辊轴承负荷、最小可轧厚度、轧辊温升等）的辊系参数优化模型，以此模型为基础，利用惩罚函数法计算了益昌薄板公司1219冷轧机辊系参数，编制了AutoCAD平台下的轧机结构示意图自动图形软件。

The method using precise leveling instrument as settlement observation system of static load test in the soft sail is pro-posed herein, for the reasons that conventional combined base beam and dial gauger observation system is easily affected by load platform.

针对软土地区单桩静载试验中常用的基准梁百分表沉降量测系统易受压重平台影响的问题，提出将精密水准仪作为静载试验的沉降量测系统。

Series resistors are the only industry-wideproducts; self-designed ZX No sense resistor and ZF series dedicated load generating units are widely used in load-selling domestic market; and serve the cause of national defense.

系列电阻器是全行业唯一的部优产品；自行设计的ZX□无感电阻器及ZF系列专用负载广泛用于发电机组负载，畅销国内市场；并服务于国防事业。

Broad working load enclothes ● to help an user realize ISO9000 ● to use ● diversity and flexibility ● easily portable the working load that suits you with consistence and funds are estimated the 5500A of Fu Luke company of calibration program level tastes calibrator prolifically, can calibration number type and imitate type are multi-purpose watch, thermometer , hand-held dynamometer, data is collected implement, voltaic clamp, each sort analyzer of harmonic of calibrator of watch of recorder, face plate, process, electric power and a lot of other are similar.

宽广的工作负荷笼盖●帮助用户实现ISO9000 ●易于利用●多样性和灵敏性●便携式和坚固性适合您的工作负荷及经费预算的校准方案尺度的福禄克公司5500A多产物校准器，能够校准数字式和模拟式多用表、温度计、手持式功率表、数据采集器、电流钳、各类类型的记实仪、面板表、过程校准器、电力谐波分析仪以及良多其它近似的测量工具。

Not only it can display all stable state parameter, but also the load increase quickly, load decrease quickly, voltage, current, frequency curve, voltage curve, current harmonic curve and harmonic content.

不仅可以召测所有稳态参数，还能召测突加、突卸、电压、电流、频率曲线，及电压、电流谐波曲线及谐波含量。

For mastering on-load property of the third harmonic excitation system . Thus , a new method to analyze harmonic winding no-load property curve of harmonic excitation synchronous generator , named as three-segment method , is presented in this article.

为了把握三次谐波励磁系统的空载性能，本文提出了应用三段法来分析三次谐波励磁同步发电机谐波绕组空载特性。

A loading cycle consisting of a haversine load followed by a rest period was adopted to simulate the actual vehicle loading on asphalt pavement, and a viscoelastic-damage mechanics model was deduced for permanent deformation of asphalt mixture under repeated load.

再采用半正矢波间歇荷载模拟实际路面轮载作用，推导了重复荷载作用下沥青混合料永久变形的弹黏塑性损伤力学模型。

Assumed resisting power method of load-structure model is used tocalculate hemicycle lining under bias load.

指出偏压荷载作用下的隧道衬砌内力计算可以采用基于假定抗力法的荷载结构模型进行计算。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷