Word · Frequency #27048
cathodes
阴极
cathodes is the plural of cathode.
a negatively charged electrode that is the source of electrons entering an electrical device
- 1.
An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows outwards (and thus, electrons flow inwards). It can have either a negative or a positive voltage with respect to anode of the same polarized device (depending on whether the device is a load or a source, respectively).
电池或其他电偏振器件中正电流向外流出的电极(电子流入)。相对于同一器件的阳极,其电压可为负或正,具体取决于器件是负载还是电源。
- 2.
a negatively charged electrode that is the source of electrons entering an electrical device
阴极:带负电荷的电极,是电子进入电气设备的来源
- 3.
The electrode at which chemical reduction of cations takes place, usually resulting in the deposition of metal onto the electrode.
发生阳离子化学还原反应的电极,通常导致金属沉积在电极上。
- 4.
the positively charged terminal of a voltaic cell or storage battery that supplies current
正极:原电池或蓄电池中供给电流的正极端子
- 5.
The electrode from which electrons are emitted into a vacuum tube or gas-filled tube.
向真空管或充气管发射电子的电极。
- 6.
That electrode of a semiconductor device which is connected to the n-type material of a p-n junction.
半导体器件中连接PN结n型材料的电极。
电池或其他电偏振器件中正电流向外流出的电极(电子流入)。相对于同一器件的阳极,其电压可为负或正,具体取决于器件是负载还是电源。；阴极:带负电荷的电极,是电子进入电气设备的来源；发生阳离子化学还原反应的电极,通常导致金属沉积在电极上。；正极:原电池或蓄电池中供给电流的正极端子；向真空管或充气管发射电子的电极。
In use
In a battery, electrons flow from the anode to the cathode.
The lab assistant cleaned the cathode before starting the experiment.
These cathodes are made from a special metal alloy.
the cathode of [device]
用 of 短语表示阴极属于哪个装置或部件。
The cathode of a vacuum tube emits electrons.
真空管的阴极发射电子。
at the cathode
介词 at 表示位置，常用于说明反应发生在哪一极。
Reduction occurs at the cathode during electrolysis.
电解过程中，还原反应发生在阴极。
between the cathode and [electrode]
表示两极之间时用 between...and...，阴极常与阳极（anode）成对出现。
Connections
Collocations
- cathode ray tube
- 阴极射线管
- The old television used a cathode ray tube to display images.那台旧电视机使用阴极射线管来显示图像。
- cold cathode
- 冷阴极
- Cold cathodes are often used in neon lamps.冷阴极常用于霓虹灯中。
- hot cathode
- 热阴极
- A hot cathode emits electrons when heated.热阴极受热时会发射电子。
- cathode ray
- 阴极射线
- Cathode rays are beams of electrons.阴极射线是电子束。
- cathode material
- 阴极材料
- The battery's cathode material affects its performance.电池的阴极材料影响其性能。
- copper cathode
Learner notes
Memory Tip
cathode 和 cation 都以 cat 开头：阴极(cathode)吸引阳离子(cation)。想象一只猫被负极吸住，毛全竖起来。
Context & Register
语域：formal 常见场景：electronics、physics、electrochemistry 通常用于技术或科学语境，如物理学、电子学和电化学，日常口语中较少使用。
Pronunciation & Spelling
与 cathode 押韵的词有 anode、electrode、diode、episode、code，它们都以 /oʊd/ 结尾。注意 method /ˈmɛθəd/ 拼写与 cathode 有相似处，但末尾读 /əd/，不押韵；father 中的 th 读 /ð/，也与 cathode 的 /θ/ 不同。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.