| 释义 |
alternating current
al·ter·nat·ing current (ôl′tər-nā′tĭng, ăl′-)n. Abbr. AC An electric current that reverses direction in a circuit at regular intervals.alternating current n (Electrical Engineering) a continuous electric current that periodically reverses direction, usually sinusoidally. Abbreviation: AC Compare: direct current al′ternating cur′rent
n. an electric current that reverses direction at regular intervals, having a magnitude that varies continuously in a sinusoidal manner. Abbr.: AC Compare direct current. [1830–40] al·ter·nat·ing current (ôl′tər-nā′tĭng) An electric current that reverses its direction of flow at regular intervals. Because the voltage of alternating current can be easily controlled with transformers, this is the type of electricity generated by power stations. The transformers raise the voltage to make it easier to transmit over long distances, then lower the voltage for safer use in homes and buildings. Compare direct current. See Notes at current, Tesla.alternating currentA rapidly reversing electric current.Thesaurus| Noun | 1. |  alternating current - an electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second"alternating electric current, ACelectrical energy, electricity - energy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity"direct current, direct electric current, DC - an electric current that flows in one direction steadily |
TranslationsWechselstromcourant alternatifcorrente alternataalternating current
current [kur´ent] 1. something that flows.2. specifically, electricity transmitted through a circuit.alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.galvanic current a steady current" >direct current.current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced potential" >membrane potential; it may be either diastolic or systolic.current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.leakage current the electrical current that exists in the parts or metal case of electrical equipment.outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.al·ter·nat·ing cur·rent (AC), a current that flows first in one direction then in the other, for example, 60-cycle current.alternating current An MRI term for a continuously changing flow of electrons that alternates its polarity at a periodic rate. In the US, the current changes at a frequency of 60 Hz.al·ter·nat·ing cur·rent (AC, ac, a.c.) (awl'tĕr-nāt-ing kŭr'rĕnt) Electric current that reverses direction (positive-negative polarity) many times each second (with each rotation of the armature of the dynamo generating the current). al·ter·nat·ing cur·rent(AC, a.c.) (awl'tĕr-nāt-ing kŭr'rĕnt) Electric current that reverses direction (positive-negative polarity) many times each second (with each rotation of the armature of the dynamo generating the current). LegalSeeCurrentFinancialSeeCycleAcronymsSeeACalternating current
Related to alternating current: direct currentSynonyms for alternating currentnoun an electric current that reverses direction sinusoidallySynonyms- alternating electric current
- AC
Related Words- electrical energy
- electricity
Antonyms- direct current
- direct electric current
- DC
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