查询词典 ripple effect

The power loss corresponded with the current ripple is analysed, then the method to design a inductor for minimal power loss is proposed in this paper.

高效率、高功率密度、高可靠性成为开关电源发展的趋势[1-7]，而其中高效率是提高功率密度和可靠性的一个重要因素。

Finally, the simulation of the system and the experimental results of PWM rectifier are presented. The results of the simulation and experiment indicate that the input power factor is close to 1, the output voltage of the rectifier is stable and the high quality charge and discharge: current of the accumulator is achieved, current ripple is small.

本文最后给出了系统的仿真和PWM整流器实验波形，仿真和实验的结果表明：系统实现了输入功率因数接近1，变流器输出电压稳定；获得了较高质量的蓄电池充放电电流，电流纹波小。

Metal network hole wave packing with metal sheet metal punching, draw to mangle network block specific specification, surface its form regular rhombus network hole is then punching to become ripple a kind of packing of form, this kind of packing comprehensive silk screen packing and merit of the board wave packing , have the characteristics that light, press reducing, efficiency high.

金属网孔波填料是用金属薄板冲压、拉伸成特定规格的压延网片，其表面形成规则的菱形网孔，然后冲压成波纹形状的一种填料，这种填料综合了丝网填料与板波填料的优点，具有重量轻、压降低、效率高的特点。

Metal network hole wave packing with metal sheet metal punching, draw to mangle network block specific specification, Surface its form regular rhombus network hole is then punching to become ripple a kind of packing of form, This kind of packing comprehensive silk screen packing and merit of the board wave packing , have the characteristics that light, press reducing, efficiency high.

金属网孔波纹填料是用金属薄板冲压、拉伸成特定规格的压延网片，其表面形成规则的菱形网孔，然后冲压成波纹形状的一种填料，这种填料综合了丝网填料与板波填料的优点，具有重量轻、压降低、效率高的特点。

This article mainly introduces the advantage of synchronous multi-phase DC/DC converter in decreasing ripple current and increasing efficiency and gives result of simulation and practice.

像这样低电压和大电流的电源主要存在两个问题：①由于输出电压极低，很难提高电源效率；②由于负载电阻极低，若采用传统方式

The Ripple Carry Out is used to stop incrementing the counter when the maximum count is exceeded.

纹波进行是用来停止递增计数器时，最大计数超过。

State equations, the accelerating algorithm and simulated ripple results of a symmetrical Cockcroft Walton circuit are described.

以对称型 Cockcroft-Walton电路为对象，介绍了状态方程的建立和加速计算方法。

It can account for many phenomena which expected utility theory has so far failed to explain, such as Allais paradox, Ellsberg paradox, preference reversal, certainty effect, reflection effect, isolation effect, common ratio effect.

后悔理论能够很好地说明期望效用理论所不能解释的Allais悖论、Ellsberg悖论、偏好反转现象、确定性效应、反射效应、分离效应、共同比率效应等异象，而且能够应用于决策理论和资产定价等金融领域。

In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.

本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法，选取苯基小分子作为研究对象，构建了金属电极/有机小分子/金属电极三明治结构体系，系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素，其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响，本论文主要包括以下五个章节的内容：第一章为综述部分，主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法，以及目前在研究分子器件中存在的一些问题，最后给出了本论文的主要研究内容和技术路线。

Institute of Plant Protection, Anhui Academy of Agricultural Science, Hefei 230031, China Abstract: The control effect of propiconazole microcapsule to postharvest anthracnose of apple and their application techniques at 25℃ and 10℃ in storage were studied. The results showed that the difference between the control effect with spraying and soaking were significant, the control effect of fast release for propiconazole microcapsule was better than that of slow release. The control effect of fast release for propiconazole microcapsule was 100% at 25℃ in storage, and was 86.8% 10℃ in storage.

安徽农科院植物保护研究所，合肥 230031 摘要：研究了在25℃和10℃贮藏条件下释放速度分别为快、中、慢的丙环唑微胶囊剂对苹果采后炭疽病的控制效果，结果表明：浸泡处理比喷雾处理的效果要好，释放速度快的比释放速度慢的控制效果要高，在25℃贮藏条件下15d的控制效果为100%，在10℃贮藏条件下控制效果为86.8%。

Go to your desktop and right click in a blank space.

请到您的桌面，然后右击一个空白。

Tara appears in Buddhism, Jainism, and particularly, Tibetan Lamaism, as a complex array of manifestations: goddess of ascetism and mysticism, mother creator, protectress of all humans as they cross the sea of life.

度母出现在佛教，耆那教里面，尤其是西藏的喇嘛教，作为一系列的陈列阵容；神秘的女神，创世之母，人类横过生命之海洋的女性保护者。