扩散的例句大全

Based on the branching pore-tree, a reaction diffusion model is proposed and used to analyze the effect of the fractal structure on reaction efficiency.

研究发现：分形结构特征对反应物的扩散性质具有重要影响。

Analysis of transformation-diffusion brazed joint

相变-扩散钎焊工艺焊接接头缺陷分析

Research of hydrogen shield diffusion braze welding technology for precise parts

精密零件氢气保护扩散钎接焊工艺研究

Study of diffusion behavior of element Si in rapid solidifiable and common Al-Si brazing metal

快冷与普通Al-Si钎料中Si的扩散行为研究

The diffuse speed and depth of Si element in rapid solidification brazing metal are higher than that in as-cast one.

快冷钎料中Si元素在母材中的扩散速度和深度都远高于普通铸态钎料。

The results indicated that the diffusion behavior of element Si in the matrix is basically the same no matter whether it came from rapid solidifiable or common brazing metal.

实验结果表明，普通钎料和快冷钎料中Si元素在母材基体中的扩散过程基本相同。

The Al-Cu eutectic brazing metal is made to braze pure aluminium substrate in vacuum. The diffusion phenomenon of Cu in pure aluminum bar under different brazing temperature and heat preservation time is investigated by means of SEM and EDS.

制备Al-Cu共晶合金钎料，用SEM和EDS研究不同钎焊温度和保温时间条件下，纯铝棒料基体对接真空钎焊接头Cu元素的扩散行为。

The Al element in the substrate diffuses into the brazing seam, forming a thin reaction layer in the interface region.

焊接母材中的Al元素向焊缝发生了扩散，在界面区形成了一层很薄的反应层。

The small patches of different structure can increase urban landscape heterogeneity, providing migration and diffusing temporary habitats for creatures, there will be close to the resident district and work district, thus would be very convenient to use.

结构不同的小斑块可增加城市的景观异质性，为生物提供迁徙地、扩散暂歇地，而且距离居住区、工作区近，方便使用。

A Method to Determine the Eddy Diffusive Coefficient in Semi-Closed Bay

确定无河湾海水涡动扩散系数的一种方法

The diffusion distances of resinous liquid in dentin at the introduced time of 30, 60 and 90s with file, smooth broach and cotton reservoir were investigated in the in vitro experiments.

对塑化液采用不同导入时间（30、60、90s），不同导入方法（锉，光滑髓针，棉捻）在牙本质内扩散距离的影响进行了离体牙实验。

The interfacial diffusion of microemulsion membrane controled extraction process.

动力学研究表明提取过程的速控步骤为微乳液膜界面扩散过程.

Happiness is like a stone dropped into a pool an ever-widening, circle of ripples.

快乐好似扔入池子里的一颗石头,会激起不断扩散的阵阵涟漪.

The sandstorm diffusion is an ecological environment problem which is difficult to analyze.

风沙扩散是一个比较难于研究的生态环境问题.

Efforts to prevent conflicts and keep the peace in their aftermath can stop insecurity from spreading.

努力预防冲突并在冲突发生后维持和平,可以制止不安全的因素四处扩散.

Existence of Positive Solutions for a Class of Degenerate and Nondegenerate Stable Diffusion Models

一类退化与非退化稳态扩散模型正解的存在性

Spread of microorganism aerosol in animal house to its environments

畜禽舍微生物气溶胶向环境扩散的研究

Suitable drying humidity and temperature could improve water diffusion properties and increase drying rate.

合理的高温高湿干燥条件,有利于改善水分扩散特性,提高干燥速度.

We extended Torrey's theory, based on the model of random walk to nearest neighbor sites for homonuclear dipolar interaction, to the case that both homo-and heteronuclear interactions are existent.

我们把Torrey同核偶极作用近邻无规扩散行步理论推广到同核、异核偶极作用并存的情况；

Then the principle of AC calorimetric method and its experiment technology were described in detail.

然后深入讨论了交流量热法测试薄膜热扩散率的原理及其实验技术。