查询词典 wave system

In this paper,a kind of frequency variable adjusting speed system based on single-chip microcomputer AT89C51 is introduced as master controller,adopting the SA8281 as a sine wave generator.

摘 要：本文介绍了一种由AT89C51单片机为主控制器的变频调速系统，采用SA8281作为正弦波发生器。

Because that the middle and upper atmosphere is a complex system of coupling between the dynamics, photochemistry and radiation, in this project, we mainl study the effects of the interaction between the dynamics, photochemistry and radiation on gravity waves propagation in the mesosphere and low thermosphere by using a photochemical-dynamical gravity wave model.

由于中高层大气是光化、辐射和动力相互作用的复杂系统，本项目集中探讨了光化和辐射所造成的非绝热过程对中高层和低热层大气重力波的影响，着重对中层顶区大气重力波不稳定机制以及光化-动力学耦合过程进行研究，并把计算结果与观测进行比较。

The influence of impulse voltage waveshape on particle-initiated breakdown voltage of a GIS system in SF6 and SF6/Air mixtures is reported. The results are compared with the characteristics of air gaps. For the SF6 gaps, breakdown voltage depends on wave-front duration but almost independs on wavetail duration. For the gaps in SF6/Air mixtures, the influence of impulse waveshape also depends on SF6 contents and electrical field non-uniformity

作者研究比较了正极性冲击电压波形对SF_6、空气、SF_6/空气的 GIS 电极装置由固定导电微粒引发的击穿电压的影响，结果表明：SF_6间隙的击穿电压受冲击电压波前时间长短的影响较大，而与波长的关系不大，当采用SF_6/空气混合气体时，则这种影响随SF_6含量增大而愈明显，并与电场不均匀程度有关。

One mainreason is that the origin of the current computertechnology was built upon the western system oflanguage and logic, which makes it almost impossiblefor Chinese architects to over take the current ongoingdigital intelligence collectively. Other than that, insubjective level, we tend to pursue the mentalsatisfaction escalating from the void, which is gettingmore embraced in technology evolvement of themodern history. Consequently it is prevalent for us tosing high praise of our tradition and profound easternculture while envisaging the western wave. Low-Techis one of those approaches showing our wisdom ofavoiding the opponent's strength by exaggeratingour own advantages instead.

为什么这种现象没有在中国广泛发生，这里有客观物质条件的原因，当代数字化科技的源动力计算机是建构在西方世界的语言和逻辑体系上的，软件和技术方面的更新，让我们首先要克服语言和思考逻辑上的屏障，在群体层面上达到并超过西方日益创新的数字化技术就显得捉襟见肘；其次，在主观思维上，我们的文化更倾向于务&虚&，追求精神的陶冶和满足，加之技术方面存在欠缺，就更让我们倾向于和西方探讨只有我们才有的东方博大的文化传统，&低技&的策略，应该说体现了一种我们中国人聪明的避实击虚的策略。

Through the star communication network of VSAT Ku wave band was set up and linked with distance-controlled telephone network at the base, so as to realize the free communication between production unit field and management department at base, at same time, by using the information system of exploration production. it is realized that the specific data processing such as log profile along with drilling well, well logging curves, playback of log second data, real lime data of log instrument, and oil-testing data, geophysical data as well as web releasing function, with the geological data, the daily report of drilling well and oil-testing released onsite together, the dynamic information platform of exploration management has been established, which provides leaders at various level, research personnel and managers with an integrated, abundant data, dynamic information platform along with drilling.

通过建立VSAT Ku波段星状通讯网络，并将其与基地程控电话网络相连，一方面实现了野外生产单位与基地通讯的畅通；另一方面，应用勘探生产信息系统实现随钻录井剖面图、测井曲线、录井秒数据回放、录井仪实时数据及试油、物探资料等专业数据的处理及Web发布功能，与现场生产传输系统发布的地质、钻井、试油日报共同作为勘探动态管理信息平台，为基地各级领导、研究人员、管理人员提供了一个集成的、具有丰富资料的井场随钻动态信息平台。

Our factory successfully passed the international standard system of ISO9001, ISO14001 requirements and in responding to EU directives ROSH unleaded has obvious advantages, because we have introduced the international advanced SIEMENS complete set of production lines, including its latest D series, and the ARSA Reflow Oven, Wave Soldering furnace.

我厂顺利通过国际标准体系ISO9001，ISO14001的要求，并在应对欧盟ROSH无铅指令方面有明显优势，因为我们引进了国际先进的SIEMENS的全套生产线，包括其最新的D系列，及ARSA的回流炉，波峰焊炉。

Based on these, the single phase converter system is studied in detail, including the selection of the main circuit scheme, the formation of Sine-wave Pulse- width Modulation signal, the design of the drive and protection circuit of IGBT, and the design of high frequency transformer. Finally, the simulation software is employed to test the effect. And the result is satisfactory.

在此基础上，本文主要对电能质量控制稳定器所需的DC/AC控制电源进行了详细研究，包括主电路方案的选择、SPWM波的生成、IGBT的驱动和保护电路、高频变压器的设计以及闭环电压控制原理，最后进行了输出电压的计算机仿真分析，结果是令人满意的。

By applying ultrasonic wave to different PP/nucleators system, crystalline structures of PP are changed.

静态超声作用使PP及PP/成核剂体系的结晶行为发生了显著变化。

Besides, a quarter wave plate, an analyzer, a CCD camera, and a personal computer consisted the phase modulation and signal analysis system of this waveguide interferometer.

最后可由本系统程式根据物光的相位变化量算出波导边界上的改变。

The studies of the dynamic processes and mechanism of East Asian monsoon system variability and anomaly,especially on the relation of the interannual and interdecadal variabilities and anomalies of EAMS to quasi-stationary planetary wave activities,are systematically reviewed.

本文系统地回顾了近几年来关于东亚季风系统的动力过程与机理方面的研究，特别是关于东亚季风系统年际和年代际变异与准定常行星波活动关系的研究。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。