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单词 diffusion
释义

diffusion /dɪˈfjuːʒn//dɪˈfjuːʒn/

英汉-汉英词典
n. 扩散,传播;[物]漫射
词组 | 习惯用语
diffusion coefficient 扩散系数;扩散率
diffusion equation 扩散方程
gas diffusion 气体扩散,气态扩散
diffusion process 扩散过程
diffusion bonding 扩散压合;扩散接合;扩散粘结
diffusion layer 扩散层
diffusion mechanism 扩散机制;扩散机理
molecular diffusion 分子扩散
diffusion rate 扩散率;扩散速度
turbulent diffusion 湍流扩散
in diffusion 向内扩散
thermal diffusion n. 热扩散;热抗散
diffusion flame 扩散火焰
heat diffusion 传热,导热;热扩散
convection diffusion 对俩散
air diffusion 空气扩散
diffusion resistance 扩散阻力
apparent diffusion coefficient 表观扩散系数
diffusion barrier 扩散势垒区;扩散式叠层
diffusion time 扩散时间;弥漫时间
英语例句库
  1. The effective diffusion coefficient and rate constant of intraparticle transport were calculated.
    求出了颗粒内有效扩散系数和颗粒内扩散速率常数。
  2. Unhealthy lifestyle often take on the characteristics of self-invention,sociality,diffusion and alterability.
    不良生活方式具有自创性、社会性、播散性和可改变性。
  3. Otherwise, a big error will be aroused.Being the effect of diffusion process, this method is not suitable for cathodal course.
    由于受扩散作用的影响,这种等距离电位法不适合对其阴极过程进行修正。
  4. The lower boundary of the region above which molecular diffusion dominates is 120 km altitude and is known as the turbopause.
    分子扩散占主导地位的区域下界约在120公里处称为湍流层顶。
  5. To know the effects of internal and external diffusion on gas-solid catalytic reaction, to grasp the common models of liquid-solid uncatalyzed reaction.
    掌握理想流动模型;了解多釜串联模型与轴向分散模型模型设计方程的推导过程。
  6. The antibacterial action of the rhizomorph from the Armillaria mella was studied by the methods of agar diffusion, liquid cultivation and surviving bacteria count.
    采用滤纸片法、液体培养法和活菌计数法,研究了蜜环菌菌索提取液对常见微生物的抑制作用。
  7. Thermal diffusion sherardizing is widely used by its good rust-resistance, whichwas developed as a new metal surface disposal technology at beginning of last century.
    扩散渗锌作为上世纪初发展起来的一项金属表面处理技术,以其良好的耐腐蚀性而得到广泛应用。
  8. Since a mutual diffusion between adhesive layer and matrix and a innerstress on interfaces exist,there is a optimal thickness of adhesive layer in composites.
    由于聚合物粘接层和基体聚合物的相互扩散以及界面内应力的存在,复合材料中存在一个最佳的聚合物粘接层。
  9. The results show that rare earth elements can efficiently improve the structures of the Chromvanadizing layer, the rate of growth and properties of diffusion layer.
    结果表明,稀土元素能有效地改善铬钒共渗层结构,提高共渗层生长速度和性能。
  10. In this paper, we have studied the diffusion of trimer and hexamer on Pt (111) surface, the atomic interaction is modeled by the embedded-atom method potential.
    我们使用原子嵌入势(Embedded atom method)来描述原子间的相互作用,研究了Pt(111)表面上吸附三聚物和六聚物的自扩散现象。
  11. The appearance diffusion coefficient and the fractional anisotropy were measured for the splenium of the corpus callosum, the genu of the corpus callosum, and the hippocampus.
    测量胼胝体膝部、胼胝体压部和海马的表观扩散系数和各向异性分数。
  12. Based on the emission, absorption, diffusion, reflection and scatteration of light by a voxel, it is suitable for generating and rendering realistic images of complex scenes.
    基于体单元对光线的发射、吸收、漫射、反射和散射基础上的体放射法,适用于复杂景物的生成和演示,在真实感图形演示中具有重要地位。
  13. Quantum well intermixing induced by impurity diffusion has been used in fabricating nonabsorbing windows in the cavity facets to improve the output power of high-power laser diodes.
    杂质扩散诱导量子阱混杂技术可用于制作腔面非吸收窗口, 提高大功率半导体激光器的输出功率。

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原声例句
Kurzgesagt 科普动画

So all life on earth relies on diffusion.

生活热爱自由事物。因此,地球上所有生命都依赖于扩散

Kurzgesagt 科普动画

Cell membranes allow for diffusion of certain molecules.

细胞膜允许某些分子扩散

PBS趣味科普

So diffusion is the process of sort of spreading out.

所以扩散就是一种传播出去的过程。

生物学基础入门

Let's start with diffusion. The lovely smells of the cake spread around the room by diffusion.

我们从扩散开始吧。蛋糕的香味通过扩散传遍了整个房间。

生物学基础入门

The bigger the surface area, the faster the diffusion of the gases can occur.

表面积越大,气体的扩散就越快。

PBS趣味科普

Because diffusion on its own doesn't create patterns.

因为扩散本身不会形成图案。

Kurzgesagt 科普动画

At certain scales diffusion is just too slow to keep cells alive.

在某种程度上,扩散太慢而无法保持细胞存活。

双语版 TED-Ed 演讲精选

See, if the cells are frozen, there's very little molecular movement, and diffusion practically stops.

比如说,当细胞冷冻以后,就几乎没有分子活动,扩散也基本停止了。

Kurzgesagt 科普动画

And then the magic of diffusion happens.

然后,扩散的魔力发生了。

如果国宝会说话

In the time before the invention of printing, the diffusion of classic works relied on transcription.

在印刷术发明之前,经籍著作的传播主要依赖于抄写。

中文百科

扩散作用

两种不同物质的扩散示意图
当光照在本征半导体中心上时,载流子在中间产生,并向两边扩散。由于电子(绿色)的扩散系数高于空穴(紫色),电子在中心处的堆积比空穴更少。
Dibujo esquemático de los efectos de la difusión de moléculas a través de una membrana celular.
A diffusion is a process in physics. Some particles are dissolved in a glass of water. At first, the particles are all near one corner of the glass. If the particles all randomly move around (

分子扩散,通常简称为扩散,是分子通过随机分子运动从高浓度区域向低浓度区域的网状的传播。扩散的结果是物质缓慢地混合起来。在温度恒定的空间中,忽略外部分子对其的作用力,扩散过程的结果是达到完全混合的一种平衡状态。 数学上,扩散过程通常由菲克定律描述。

英语百科

Diffusion 扩散作用

A diffusion is a process in physics. Some particles are dissolved in a glass of water. At first, the particles are all near one corner of the glass. If the particles all randomly move around (
Time lapse video of diffusion of a dye dissolved in water into a gel.
Diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The barrier is removed, and the solute diffuses to fill the whole container. Top: A single molecule moves around randomly. Middle: With more molecules, there is a statistical trend that the solute fills the container more and more uniformly. Bottom: With an enormous number of solute molecules, all randomness is gone: The solute appears to move smoothly and deterministically from high-concentration areas to low-concentration areas. There is no microscopic force pushing molecules rightward, but there appears to be one in the bottom panel. This apparent force is called an entropic force.
3D rendering of diffusion of purple dye in water.

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential). This is also referred to as the movement of a substance down a concentration gradient. A gradient is the change in the value of a quantity (e.g., concentration, pressure, temperature) with the change in another variable (usually distance). For example, a change in concentration over a distance is called a concentration gradient, a change in pressure over a distance is called a pressure gradient, and a change in temperature over a distance is a called a temperature gradient.

近义、反义、联想词
近义词
n.
natural process, natural action, action, activity, spread, spreading, distribution

联想词
dispersion散布;kinetics动力学;uptake摄取;evaporation蒸发;absorption吸收,吸收作用;permeability弥漫;propagation繁殖;adsorption吸附;conduction传导;convergence集中,收敛;polarization极化;
英英词典
diffusion n.
  1. (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation
  2. the spread of social institutions (and myths and skills) from one society to another
  3. the property of being diffused or dispersed

  4. synonymous: dissemination
  5. the act of dispersing or diffusing something
    • the diffusion of knowledge

    synonymous: dispersion, dispersal, dissemination
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更新时间:2025/6/19 8:11:54