N the 20th century, mankind has created material and spiritual wealth unmatched by any other time in history.
20世纪，人类创造的物质和精神财富，超过了以往任何一个时代。
If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.
如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。
She derived another formula relating the number of folds possible in one direction (n) to the minimum possible length of material (l) and the material's thickness (t)
她推导出了另一个关于折叠次数（n）、现实的最小长度（l）以及材料厚度（t）的关系式。
At the junction where the two layers meet, electrons pair up with holes, establishing an electric field that prevents electrons from moving from the n-type material to the p-type.
两层接触处电子与“孔”便成双配对地形成了电场，阻止电子从n层移到的p层。
The development and current situation of the functional material of chirality N-substituted maleimide and derivates have been made a comprehensive survey.
对手性N-取代马来酰亚胺及其衍生物功能材料的研究现状、研究方法、用途以及进展作了详细的综述。
The S-N curves for internal fracture mode are not affected by surface conditions, which is an inherent characteristic of the material.
内部破坏模式的S - N曲线不受表面条件的影响，是材料固有的特性。
This method converted the S-N curve of material into the S-N curve of the construction member so that it made the computation more closely to the practical service life of the construction member.
该方法将材料的S -N曲线转化为零构件的S - N曲线，使之计算结果更接近于实际零构件的使用寿命。
In this case, as the P-type and N-type materials, any material generally preferably used for thermoelectric pairs can be used.
在这种情况下，作为P型和N型材料，可以使用通常优选地用于热电偶的任何材料。
The smallest unit that supports electron flow in a semiconductor material ; a hole in P-type silicon or a free electron in N-type silicon.
多数载流子-一种载流子，在半导体材料中起支配作用的空穴或电子，例如在N型中是电子。
Abstract N-acetylneuraminic acid certified reference material was separated by semi-preparation HPLC.
摘要采用半制备液相色谱法制备 N- 乙酰基神经氨酸标准物质。
Filter: n. A porous material through which a liquid or gas is passed in order to separate the fluid from suspended particulate matter.
用于过滤的材料：可通过液体或气体的多孔性物质，以便从悬浮物质中分离液体vi。
The paper discuses the characteristics and technical problems n applying TP801 microcomputer to sampling and processing the data automatically as the material testing machine.
本文讨论了利用单板微机作为材料力学试验机数据自动采集和处理的特点及技术问题。
The silicoaluminophosphate material has methanol conversion activity and n-hexane cracking activity.
该硅铝磷酸盐材料具有甲醇转 化活性和正己烷裂化活性。
In this experiment, compost filler were added in poultry composting process in order to regulate C/N and control stench arising, as fowl dung was taken for the raw material.
试验以鸡粪为原料进行堆肥发酵，通过添加填充料，调节堆料C/N值，有效控制堆肥发酵过程中臭气的产生。
Poly (N-vinyl carbazole) was modified to prepare azo-PVK by post-azo-coupling reaction with diazo salt as raw material using phase-transfer catalysts.
我们以聚乙烯咔唑为偶合组分，和发色基团对硝基苯重氮盐在相转移催化剂存在下，采用后重氮偶合方法，制备出偶氮化聚乙烯咔唑。
First, the azo dye with N-hydroxyethyl functional group in coupling components is taken as the raw material to have acryloyl reaction, to obtain hair color monomer.
首先用偶合组分上带n -羟乙基官能团的偶氮染料为原料经丙烯酰化反应，得到发色单体。
YU Y N. Fundamentals of Material Science[M]. Beijing: Higher Education Press, 2006.
[15]余永宁。材料科学基础[M]。北京：高等教育出版社， 2006。
YU Y N. Fundamentals of Material Science[M]. Beijing: Higher Education Press, 2006.
[15]余永宁。材料科学基础[M]。北京：高等教育出版社， 2006。
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