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单词 Electrical conductivity
释义

Electrical conductivity

原声例句
影视剧中的医学知识

A conduction abnormality is basically when there's a problem with electrical conductivity of the heart.

- 传导异常基本上是指心脏的导电性出现问题。

化学 Crash Course

And since electrolytes carry electric charge, the higher the concentration of electrolytes in a solution the higher it's electrical conductivity.

由于电解质带有电荷,因此溶液中电解质的浓度越高,其电导率就越高。

经济学人-科技

That does not affect their electrical conductivity, but nanoscale particles like this are known to scatter and obstruct the passage of heat through imperfectly understood quantum-mechanical processes.

它们的导电性不会因此受到影响,但是人们知道像这样的纳米级颗粒会分散开来并通过人们还尚未完全理解的量子力学过程阻碍热量通道。

202322

These properties of high electrical conductivity, strength, and thermal conductivity, combined with its high optical transparency, make graphene an ideal material for numerous applications.

这些高导电性、强度和导热性的特性,加上其高光学透明性,使石墨烯成为众多应用的理想材料。

化学 Crash Course

Arrhenius found that you can even reverse engineer your study of a solution and by measuring it's electrical conductivity, figure out how concentrated it is.

Arrhenius 发现你甚至可以对你的溶液研究进行逆向工程,通过测量它的电导率,计算出它的浓度。

经济学人 Science and technology

Crucially, such a computer simulation can also be programmed to replicate patterns of electrical conductivity in different regions of the heart, using information obtained from electrocardiograms (ECGs).

至关重要的是,这种计算机模拟还可以利用从心电图(ECG)获得的信息进行编程,以复制心脏不同区域的电导率模式。

化学 Crash Course

While doing his doctoral research in the 1880s, he first developed the idea that a solution's electrical conductivity could be linked to the concentration of ions in the solution.

在 1880 年代进行博士研究时,他首先提出了溶液的电导率可能与溶液中的离子浓度有关的想法。

中文百科

电阻率 Electrical resistivity and conductivity

(重定向自电导率)
电阻物质的两端接有导线。

电阻率英语:Resistivity),又称电阻系数导电率(非电导率),是描述材料导电性能的物理量。

电阻率在数值上等于单位长度、单位截面的某种物质的电阻,数值上等于长度为一米,横截面为一平方米的该种物质的电阻大小。

电阻率的倒数为电导率。电阻率与导体的长度、横截面积等因素无关,是导体材料本身的电学性质,由导体的材料决定,且与温度有关。

电阻率在国际单位制的单位是Ω·m,读作欧姆米,简称欧米。常用单位为“欧姆·厘米”。

电阻率较低的物质称为导体,常见导体主要为金属,而自然界中导电性最佳的是银。其他不易导电的物质如玻璃、橡胶等,电阻率较高,一般称为绝缘体。介于导体和绝缘体之间的物质(如硅)则称半导体。

英语百科

Electrical resistivity and conductivity 电阻率

(重定向自Electrical conductivity)
A piece of resistive material with electrical contacts on both ends.
Filling of the electronic states in various types of materials at equilibrium. Here, height is energy while width is the density of available states for a certain energy in the material listed. The shade follows the Fermi–Dirac distribution (black=all states filled, white=no state filled). In metals and semimetals the Fermi level EF lies inside at least one band.
In insulators and semiconductors the Fermi level is inside a band gap; however, in semiconductors the bands are near enough to the Fermi level to be thermally populated with electrons or holes.
Like balls in a Newton's cradle, electrons in a metal quickly transfer energy from one terminal to another, despite their own negligible movement.
Lightning
is an example of plasma present at Earth's surface.
Typically, lightning discharges 30,000 amperes at up to 100 million volts, and emits light, radio waves, X-rays and even gamma rays.[12] Plasma temperatures in lightning can approach 28,000 Kelvin (28,000 °C) (50,000 °F) and electron densities may exceed 1024 m−3.

Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is an intrinsic property that quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m) although other units like ohm⋅centimetre (Ω⋅cm) are also in use. As an example, if a 1 m × 1 m × 1 m solid cube of material has sheet contacts on two opposite faces, and the resistance between these contacts is 1 Ω, then the resistivity of the material is 1 Ω⋅m.

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更新时间:2025/6/23 22:37:58