词汇 | cathode |
释义 | cathode noun[ C ] electronics specializeduk /ˈkæθ.əʊd/ us /ˈkæθ.oʊd/ one of the electrodes (= object that electricity moves through) in a piece of electrical equipment. The cathode is the positive electrode in a battery and the negative electrode in an electrolytic cell.(电极的)负极,阴极 Compare anodespecialized Electrical components & circuitry accumulator AGM battery anode armature bandpass filter baseband chip cathode ray coil commutator conductor LED display multicelled multiconductor negative pole number pad OLED photoresist photovoltaic cell relay transformer In this way the necessary electrical resistance can very conveniently be inserted between the anode and cathode surfaces. It gave very little gas at either electrode: that at the anode was oxygen, that at the cathode pure hydrogen. The anodes and cathodes in each vessel are connected up in parallel similar to an ordinary storage battery, but the five electrolytic vessels are connected up in series. The installation consists of five large electrolytic vessels, each of which is fitted up with five anodes and six cathodes arranged alternately. The two faces of the cathode seem to emit rays which are deviated in a direction perpendicular to the lines of force by an electric field, and do not seem to be electrified. cathode | American Dictionarycathode noun[ C ] us/ˈkæθ·oʊd/ chemistry, physics one of the electrodes (= object that electricity moves through) in a piece of electrical equipment; the positive electrode in a battery (= device that produces electricity) and the negative electrode in most other electrical devices Examples of cathodecathode The diameter of the cathode disc is 75 mm and its thickness is 3 mm. Finally, we also observe that the electron temperature at breakdown decreases as the second ionization coefficient and the cathode increases. The positive space charge of the ion layer near the cathode will shield the electric field. Only a slight asymmetry exists between anode side and cathode side. Next to the cathode is the electron sheath, which extends out for some distance from the cathode. Distribution of the electron density becomes strongly nonuniform from the cathode to anode along the gap length. Emission from a stainless steel cathode completely ceased after 10 6 pulses. In the first mode, the plasma diffuse channel was growing, initiated by nonuniformity on the cathode. While the new electron subsequently starts to accelerate toward the anode, it leaves behind the ion which moves relatively slowly toward the cathode. Here we do not care about the preliminary stage of the formation of the virtual cathode. The frequency of the virtual cathode oscillation can be approximately given as half the reflected electron oscillation. The main frequency of the virtual cathode is also deduced. The wall curvature can be neglected because the cathode radius is much larger than the sheath thickness. The zero electric field regulates injection of electrons abundantly available at the cathode surface, essentially controlling the diode current. However, these par ts are unnoticeable in the diagrams of erosion area distribution along the cathode length. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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