In this thesis a novel 9kva three - phase combined inverter , designed with this technique , is introduced . this inverter is made up of three independent single - phase inverters . each inverter can work separately 这种逆变器由三个单相逆变器构成，三相彼此独立控制，每一相即可单独工作又可组合成三相逆变器，因此带不平衡负载能力强，使用场合灵活。
In at power supply system some transformers with special connection mode , such as scott transformer , anti - scott transformer , balance transformer and so on , are usual used . the voltage ratio is one of important parameters of transformer 采用斯科特变压器、平衡变压器等特殊接线方式变压器作为主变压器，能有效抑制负序电流，减少有功损耗和电压损失，提高牵引机车的过负载能力。
4 scaffolding that is required to support a load must visibly display the maximum load permitted and all persons using the scaffold must be informed of the restrictions of use for the particular arrangement ( load capacity , general access , inspection only , etc . ) 需要承受负荷的脚手架必须清楚地显示最大允许负载，必须向所有使用该脚手架的人员通报特别的使用限制（仅指负载能力、一般进入、检查等） 。
On client - side , the author suggests that the system should use soap to enhance the heterogeneous capacity of the system , use xml to realize picture hierarchy , which would effectively improve system performance and cross - platform capabilities ; and the use of customer - data 系统完成后,采用microsoftact ( microsoftapplicationcentertest )对该系统进行压力负载测试。实验表明,基于. net平台的webgis系统具有较好的稳定性、并发性和抗负载能力。
On the research and development platform based om digital signal processor tms320f240 , the paper made experiment of the , control system with 2 . 2kw induction motor . the result proved that the system has better capabilities of draging load , vary ing frequency and calculating speed 在基于tms32of24o的研究开发平台上对一台2 . zkw的感应电动机进行了实验，实验结果证明该控制系统具有较强的带负载能力，较好的变频能力、较好的速度推算能力。
In this paper tio2 / minerals have been prepared using natural minerals as carrier and the industrial metatitanic acid and the industrial sulfate titanium liquid as the raw material based on the effects such as loading capacity of tio2 , specific surface area of minerals , different mineral source and preparation cost . the acid treatment and heat treatment of minerals , preparation methods and condition of ticvminerals have been studied , the photocatalytic experiments on samples were tested from degrading methylene blue solution , and some important results as follows : 1 本研究以天然矿物对tio _ 2的负载能力、比表面积、矿物来源、材料成本等因素为依据，通过对天然矿石载体的活化工艺研究和工业偏钛酸、工业硫酸钛液(以下简称浓钛液)为原料制取tio _ 2天然矿物复合材料的制备工艺研究，以及样品光催化降解有机物的研究，最终制得了具有光催化活性的tio _ 2天然矿物复合材料。
In this paper , the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software , structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype , such as transmission accuracy , least step , stability of the least step , load capacity is measured by the absolute rotary encoder . by analyzing the measurement data and research content , it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors , facilitate size precision adjustments , input moment can be achieved in the form of a pure force couple importing ; through this study , " the large ratio friction transmission prototype " could apply in practical engineering basically 本文研究了大速比摩擦传动的传动理论;设计了新型椭圆凸轮波发生器,设计制作了大速比摩擦传动样机;用软件ansys对所设计的椭圆凸轮结构进行了有限元分析;用19位绝对式编码器测试了大速比摩擦传动机构的传动精度、最小步距、最小步距的稳定性以及带负载能力等各项精度指标;对测量数据和研究内容进行了归纳和整理,认为新型椭圆凸轮波发生器克服了加工误差带来的诸多问题,新型椭圆凸轮波发生器可以进行尺寸精度调整,能够达到输入力矩以纯力偶的形式输入;通过本项研究,基本可以使“大速比摩擦传动机构”在工程中得以应用。
In the power - amplifying grade of drive circuit , the system adopts a method of high / low voltage drive that is different to the conventional drivers . so the high frequency performance of the system is improved and the load support capability of step motor is increased . by the software method , the control principle of the optimum increasing / decreasing frequency of step motor is achieved 在驱动电路的功放级采用了一种不同于传统驱动器的高低压驱动方式，改善了系统的高频性能，增加了步进电机带负载能力，以软件方法实现步进电机最佳升降控制规律，实现了步进电机的快速启、停控制。
Because the district is becoming larger and larger , more and more information is transferred inside one building or a district , such as vod and internet games . it is impossible to send all these information to the main net . on the one hand , lots of the information is internal , so it is best to transfer them in the local area net 因为我国的宽带小区规模越来越大，小区内部信息交换也越来越多，如vod点播、联网游戏等，如此大量数据交换工作都交给骨干网来完成，将远远超过目前我国骨干网的负载能力，而骨干网的升级代价又是如此之高，显然这种解决方法是不现实的。
Under different load , when we apply this software to any time , region and cooling way , we can get the hottest spot increment and aging rating . to manufactory , the software means sounder thermal design , which will meet the load , putted forward by user , while to user , the software equal to a master who can help them decide the capacity rating of the transformer , which will fit the load . by using the software , the potential danger and the waste , caused by unfit load choice may be avoided 研究开发了计算干式电力变压器负载能力的计算软件，可对于各种绝缘结构，各种冷却方式和任一地区、任一时间下运行的变压器在不同运行载荷下的最热点温升绝缘老化率进行分析和计算，同时利用该软件制造厂可以依据用户提出的运行负载量给出相应的热设计方案，用户可根据运行负载情况利用软件计算所需变压器的额定容量，避免额定容量选择不当造成隐患和浪费。
