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单词 电压
释义 〔piezoelectricity〕The generation of electricity or of electric polarity in dielectric crystals subjected to mechanical stress, or the generation of stress in such crystals subjected to an applied voltage.压电:由机械压力引起电介质晶体放电或电极,或因应用电压而使电介质晶体产生压力〔amplification〕The process of increasing the magnitude of a variable quantity, especially the magnitude of voltage, power, or current, without altering any other quality.放大,放大率:可变量增大的过程,尤指电压、电力或电流的增大,不改变其它特性〔power〕The product of the effective values of the voltage and current with the cosine of the phase angle between current and voltage in an alternating-current circuit.伏特量:交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积〔voltage〕Electromotive force or potential difference, usually expressed in volts.电压:电位或电位差,常以伏特为单位〔potentiometer〕An instrument for measuring an unknown voltage by comparison to a standard voltage.电势计,电位计:通过与标准电压相比较而来测定未知电压的仪器〔millivolt〕A unit of potential difference equal to one thousandth (10-3) of a volt. 微伏(特):电压单位,等于千分之一(10-3)伏 〔voltammeter〕An instrument for measuring electrical current or potential.电量计:一种用来测量电流或电压的仪器〔doubler〕A device that doubles the frequency or voltage of an input signal.倍压器,倍频器:将输入信号的频率或电压增强一倍的装置〔equalizer〕A device for equalizing pressure or strain.均衡器:用来使电压或电流保持平稳的设备〔lag〕The electric current lags behind the voltage.电流的相位小于电压〔polarography〕An electrochemical method of quantitative or qualitative analysis based on the relationship between an increasing current passing through the solution being analyzed and the increasing voltage used to produce the current.极谱法:定量分析或定性分析中的一种电化学方法,是以通过被分析溶液的一束正在增强的电流和用来产生该电流的正在增强的电压间的关系为基础〔varactor〕A semiconductor device in which the capacitance is sensitive to the applied voltage at the boundary of the semiconductor material and an insulator.变容二极管,可变电抗器:一种半导体装置,其中电容对应用在半导体材料和绝缘体边界线处的电压很敏感〔farad〕The unit of capacitance in the meter-kilogram-second system equal to the capacitance of a capacitor having an equal and opposite charge of 1 coulomb on each plate and a potential difference of 1 volt between the plates. See table at measurement 法拉:电容的单位,等于电容器极板上充以1库仑电量后两板间的电压为1伏特时的电容 参见 measurement〔surge〕A sudden, transient increase or oscillation in electric current or voltage.波动:电流和电压突然、短暂的升高或摇摆〔LED〕A semiconductor diode that converts applied voltage to light and is used in digital displays, as of a calculator.发光二极管:一种半导体二极管,可将实用电压转变成亮光,用于数字显示,如计算器〔surge〕To increase suddenly. Used of electric current or voltage.猛增:突然增加。用于电流或电压〔feeder〕Any of the medium-voltage lines used to distribute electric power from a substation to consumers or to smaller substations.馈电线:任何用来将电力从变电站分送到用户或更小的变电站的电压导线〔SQUID〕A device that measures minute changes in magnetic flux by means of a pair of Josephson junctions, often used to detect extremely small changes in magnetic fields, electric currents, and voltages.超导量子干涉磁量仪:通过使用一对约瑟夫森接合器测量磁通中微小变化的装置,常用于检测磁场、电流和电压中极其细小的变化〔microvolt〕A unit of electric potential equal to one millionth (10-6) of a volt. 微伏:等于百万分之一(10-6)伏特的电压单位 〔selenium〕A nonmetallic element, red in powder form, black in vitreous form, and metallic gray in crystalline form, resembling sulfur and obtained primarily as a byproduct of electrolytic copper refining. It is widely used in rectifiers, as a semiconductor, and in xerography. Its photovoltaic and photoconductive actions make it useful in photocells, photographic exposure meters, and solar cells. Atomic number 34; atomic weight 78.96; melting point (of gray selenium) 217°C; boiling point (gray) 684.9°C; specific gravity (gray) 4.79; (vitreous) 4.28; valence 2, 4, or 6. See table at element 硒:一种非金属元素,粉末状时呈红色,玻璃状时呈黑色,结晶状时呈金属般的灰色,与硫类似,通常作为副产品在电解法冶炼铜时获得。广泛地用于整流器(如半导体)和静电复印术中。其光电压的和光电导的效应使它可在光电池、照相曝光表和太阳能电池中发挥作用。原子序数34;原子量78.96;(灰色硒的)熔点217°C;沸点(灰色硒的)684.9°C;(灰色硒的)比重4.79;(玻璃状的硒)比重4.28;化合价2,4或6 参见 element〔thermocouple〕A thermoelectric device used to measure temperatures accurately, especially one consisting of two dissimilar metals joined so that a potential difference generated between the points of contact is a measure of the temperature difference between the points.热电偶:用于准确测量温度的热电子元件,尤指一个热电子元件,由两种连在一起的不同金属组成,这样连结点间产生的电压变化就是两点间温度差异的量度〔oscillograph〕A device that records oscillations, as of an electric current and voltage.示波器:记录(电流和电压的)摆动变化的仪器〔oscilloscope〕An electronic instrument that produces an instantaneous trace on the screen of a cathode-ray tube corresponding to oscillations of voltage and current.示波器:一种电动仪器,当电流和电压摆动变化时将其轨迹显示在阴极射线管的屏幕上
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更新时间:2025/1/5 10:43:04