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1)  concept X90
X90概念
2)  concept [英]['kɔnsept]  [美]['kɑnsɛpt]
概念
1.
Review on the porcine fat concepts and analysis methods;
猪肉脂肪概念及其测定方法研究
2.
Chinese health food——its concept,ingredients and prospect;
中国保健食品的概念、内涵及展望
3.
The review of conception and development about Eco-city;
生态城市的概念与发展回顾
3)  concepts [英]['kɔnsept]  [美]['kɑnsɛpt]
概念
1.
Basic Concepts and Applications of Solid Flame Combustion Synthesis;
固体火焰与燃烧合成的基本概念及应用
2.
Quality and level of higher education as well as discriminating relevant concepts
高等教育质量与水平及相关概念辨析
3.
The connection and differences between some basic concepts confused easily in organic chemistry teaching and learning are discussed by the author.
通过对有机化学教学和学生学习中容易混淆的一些基本概念之间的联系和区别的探讨,规范有机化学中的一些基本概念,以便学生对概念的理解和掌握。
4)  notion [英]['nəʊʃn]  [美]['noʃən]
概念
1.
Their importance and application are also described briefly,in order to provide a more comprehensive and accurate notion of nanometer material.
依据不同的角度,在三个层次上对文献中频繁出现的纳米材料进行了类别划分,并简要介绍了各自的重要特性和应用领域,以使纳米材料的概念更加完整和准确。
2.
Because of scholasticism in construction structure designing, it is necessary to advocate engineers to apply notion design thought to inspire their creativity.
针对目前建筑结构设计中墨守成规的现象 ,提倡采用概念设计思想来促进结构工程师的创造性 ,推动结构设计的发展。
3.
This paper is to expound the connotation of tourist culture,which is,in fact,a notion rather than a reality.
对旅游文化含义进行了阐述,认为旅游文化其实是一种概念而不是一种现实。
5)  definition [英][,defɪ'nɪʃn]  [美]['dɛfə'nɪʃən]
概念
1.
Newly-upgraded universities:definition,characteristics and developing strategy;
新建本科院校:概念、特征及发展战略
2.
A review on the studies of the definition, structure and measurement of intellectual capital;
智力资本:概念、结构和计量述评
6)  conception [英][kən'sepʃn]  [美][kən'sɛpʃən]
概念
1.
Lecture on Furniture Design(Ⅷ) Discussion of Conception Design of Furniture;
家具设计讲座(八) 家具概念设计
2.
Analysis of the Misunderstanding about Conception of Mental Nursing;
解析心理护理概念理解的误区
补充资料:X90概念
分子式:
CAS号:

性质:在利用介质除菌制取无菌空气的过程中,根据对数穿透定律,当一定体积的空气在除菌前后的总菌数N0和N之比值(称为穿透率)即N/N0=0.1时,即颗粒的90%被获,10%穿透过去时,其相应的介质层厚度用X90来表示。X90=2.303/K(K为除菌常数,m-1),也即K=2.303/X90

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