查询词典 voltage comparator

The stress was the study of the new methods of calculation the harmonic voltage and the harmonic current, and a new concept of filter ratio to evaluate the actual effect of single harmonic filter was raised considering the background harmonics. As well, the calculation mode of the single harmonic filter was also given based on the concept of filter ratio; it can offer effect data to evaluate the actual filter ratio of the single harmonic filter. At the same time, a method of designing the single harmonic filter was given, too, considering the background harmonics of the power system. In this paper, both the computer analysis and the proven had been done. And the result was shown to be that the voltage aberration and the harmonic current were decreased, and that the actual filter ratio of single harmonic filter was raised. The reason that we must consider the background harmonics when designing a single harmonic filter was also expatiated in this paper.

重点研究了考虑电网背景谐波下谐波电压、电流的计算方法，提出了用滤波率来评价单调谐滤波器安装容量利用率的概念，基于滤波率，分别给出了不考虑、考虑电网背景谐波时，单调谐滤波器的计算模型，为定量分析和评价单调谐滤波器的实际补偿效果提供了依据：并以此提出了考虑电网背景谐波的单调谐滤波器计算机辅助优化设计方法，并经计算机仿真分析、论证，减少了负载母线谐波电压畸变率和注入系统的谐波电流，有效地提高了单调谐滤波器的滤波效果，阐述了单调谐滤波器的设计过程中要考虑电网背景谐波的理论和实际意义。

In this paper, in order to discuss the effect of high voltage electrostatic field on storage preservation of eggs, eggs were treated under high voltage electrostatic field at 30, 60 and 90 kV/m, respectively, and the pretreatment time was 30 and 60min, respectively. Then the eggs were stored at 13℃. Different preservation performance indexes like egg white Haugh unit, yolk index, total volatile basic nitrogen and sensory changes were determined regularly.

为探讨高压静电场对鸡蛋贮藏保鲜的影响，该试验利用30、60、90 kV/m不同高压静电场分别对鸡蛋进行30和60 min的预处理，然后置于13℃左右的室温条件下贮藏，定期测定鸡蛋的哈夫单位、蛋黄指数、挥发性盐基氮和感官性状的变化等指标，研究高压静电场对其贮藏保鲜效果的影响。

Then the breakdown mechanism was introduced to explain the results.It is found that the optimum polarity combination is heteropolarity and the best scope of the ratio between trigger voltage and self-breakdown voltage is 30%~50%.

实验结果表明：新型触发管开关获得最佳触发特性所需的极性组合应为异极性组合，触发电压幅值范围为自击穿电压的30%~50%，为兼顾触发电流和保护触发器，触发电阻值应为50~100 Ω，验证了触发管开关击穿机制的已有认识。

High voltage sodium light, high voltage hydrargyrum light, ballast, trigger, lights and lantern are the company's main products.

主要经营高压钠灯，高压汞灯，镇流器，触发器，灯具等六大系列产品。

To decrease the size of electromagnetic riveter, the author proposes that pulse capacitor should be replaced with electrolytic capacitor, the existing high voltage ignitron should be replaced with thyristor. The low voltage riveting process has been studied experimentally.

根据国内现有条件提出采用电解电容器代替原有设备的脉冲电容器、以电子开关代替真空接触器，实现电磁铆接设备的小型化；低压铆接实验表明改善线圈的散热性能是低压电磁铆接必须解决的一项关键技术。

According to the different compensatory objects, this paper took a project which based on symmetry components to compensate. When SVC is used as the system compensatory, it is mainly used to adjust the system voltage. Therefore, the balanced control strategy is adopted. When SVC is used as the load compensatory, it is mainly used to restrain the voltage fluctuation and flash during the running of the impactive loads,so the unbalanced control strategy is adopted. According to this project, the hardware and software for the control system of SVC are designed.

本文首先分析了无功补偿的基本原理，针对SVC补偿对象的不同，采用一种基于对称分量法的SVC分相补偿方案：作为系统补偿时，SVC主要用来调节系统电压，因此采用平衡控制策略；而作为负荷补偿时，SVC主要用来抑止冲击性负荷运行时引起的电压剧烈波动和闪变，因此采用不平衡控制策略，依据此方案，对SVC控制系统的软、硬件进行设计，对控制系统的数据处理方法及控制策略也进行了详细的分析。

The simulation experiments of various kinds of electrode system under different pressure show that the gas inceptive when the gap is fixed, discharge voltage is proportional to the pressure; because the degree of uniformity of electrical field is different among the electrode systems, the changing trend of the inceptive discharge voltage with the pressure is unlikeness.

对各种电极在不同压力下进行模拟实验，实验表明：通常情况下，给定间隙，气体的起始放电电压随着压力的增大而增大；不同的电极系统，由于电场的均匀程度不同，起始放电电压随压力变化的趋势也不同。

The induced voltage is proportional both to the magnitude of A and , so there are two ways to minimize the induced voltage

感应电压正比于A和的大小以及A和的变化率，所以有两种办法可以使感应电压变得最小

It discusses various voltage contrast methods, and introduces a new method, that is called electron beam induced voltage contrast method.

本文讨论了各种电压衬度法，也叙述了一种新的电压衬度法，称它为电子束感生电压衬度法。

The withstand voltage of a single grain was induced to indicate the withstand voltage properties of grain boundary.

本文建立了PTCR 材料的晶界、晶粒微观模型，采用单晶粒的耐压强度表征PTCR 材料的耐压性能。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48