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characteristic group     
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  特征基团
     It is shown from this result that the more, intensive Raman spectral lines o,f A1(TO) and E(TO) vibrational mode are contributed by (Nb06) oxygen octahedra characteristic group of LiNb0_3 crystals.
     这说明,LiNbO_3晶体较强的A_1(TO)和E(TO)振动模的喇曼光谱主要是由氧八面体(NbO_6)特征基团所贡献的。
短句来源
     The optimum process is as follows:thecomponents are first immersed in Ni,then in Mo,coated by 35% NiO-MoO_3 byweight,and the value of Ni/(Ni+Mo) is 0.29.The number of acid and basic active cores and their distribution in the cata-lyst when prepared by different methods and under different conditions are mea-sured by pulse chromatography method,using solvent with characteristic group as anabsorbent.
     制备催化剂时,当先浸镍后浸钼,NiO-MoO_3涂量为35%,Ni/(Ni+Mo)原子比为0.29时,催化剂活性最高。 在研究中还采用脉冲色谱技术,以有特征基团的试剂分子为吸附质,测定不同方法、条件下制备的催化剂表面酸碱中心的数目及分布情况。
短句来源
     And the relationship between characteristic group changes and adhesive joining strength was studied.
     并对特征基团变化与粘接强度的关系进行了分析。
短句来源
     At the same time the adhesion mechanism was discussed so as to find the influence the characteristic group reaction on the adhesive properties.
     本文目的在于探讨粘接机理 ,以期得到特征基团的反应对粘接性能的影响。
短句来源
  “characteristic group”译为未确定词的双语例句
     The result of element cluster analysis shows that the elementary characteristic group for this guano soil includes P、S、Sr、Ba、Cu、Zn、Se、Ca and F, respectively.
     元素的聚类分析结果表明该粪土的元素标型组合包括 P、S、Sr、Ba、Cu、Zn、Se、Ca和 F等 9种元素。
短句来源
     The Research of On-Line Handwriting Chinese Character Recognition Based on the Characteristic Group of Strokes
     基于特征笔画组的联机手写体汉字识别的研究
短句来源
     There are two main innovational points. The first is that I studied the relationbetween group characteristic group decision-making behavior characteristic and performance of committee of loan decision-making from the theory of group decision-making.
     本论文的创新点主要有:(1)从群体决策理论的角度来研究贷审会的群体特征、群体决策行为特征与贷审会信贷决策绩效之间的关系,把群体决策理论的一些研究成果运用到现实社会中去,并通过实证对这些理论成果进行验证。
短句来源
     In this paper,by using the two orthogonal relations of the irreducible characters of groups and the following fact: an Abel group A is isomorphic with its characteristic group A * , we obtain the Vinogradov inequality over an abitrary finite group.
     本文利用群特征标的两个正交关系及任意有限Abel群A上的特征标群A*与A同构的性质,得出了任意有限Abel群上Vinogradov不等式的具体表达式
短句来源
     In the third part, it analyses the basic character of the crime of organizing, leading and participating in criminalsyndicate characteristic group.
     第三部分分析了组织、领导、参加黑社会性质组织罪的基本特征。
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  相似匹配句对
     group.
     对照组给予胃乃安口服,每次 4 粒,每日 3 次。
短句来源
     CHARACTERISTIC THEOREMS OF * - RECTANGULAR GROUP
     关于* -矩形群的刻划
短句来源
     ] group.
     ]组。
短句来源
     Definition and Characteristic of Group Violence
     论群体性暴力事件的概念和特征
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     DETECTION OF CHARACTERISTIC X
     入射离子X射线探测及其应用
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  characteristic group
For each stage, we describe characteristic group behavior, general intervention strategies, specific facilitative activities, and the role of the facilitator.
      
1.The previously established characteristic group spectral features of 1,4-dialkylbenzenes were refined.2.The line ~645 cm-1 is the most suitable for the identification of these hydrocarbons, especially in natural mixtures.
      
Though the characteristic group size and typical mating system are still uncertain for wild, free-ranging Pithecia spp., size of the study group ranged from 2-3 adult females and 1-4 adult males.
      
characteristic group search, determination of principal group, determination of principal chain, determination and naming of substituents, and construction of full name.
      
A characteristic group of races with enlarged pleopod areae is seen only in the Dinarides.
      
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Raman spectra of LiNb0_3: MgO crystals has been obtained for the first time and compared with Raman spectra of pure LiNb03 crystals. No change of the number, frequency, and relative intensity of Raman spectral lines of A1(TO) and E(TO) mode is found. There are only a very little increase in the line width. It is shown from this result that the more, intensive Raman spectral lines o,f A1(TO) and E(TO) vibrational mode are contributed by (Nb06) oxygen octahedra characteristic group of LiNb0_3 crystals.

首次获得了L_1NbO_3:MgO晶体的喇曼光谱。与纯LiNbO_3晶体的喇曼光谱相比较,A_1(TO)模和E(TO)模的谱线数目、频率和相对强度均基本不变,线宽略有增加。这说明,LiNbO_3晶体较强的A_1(TO)和E(TO)振动模的喇曼光谱主要是由氧八面体(NbO_6)特征基团所贡献的。

We mean by a characteristic group a group whose subgroups are all characteristic ones. In the present paper, we obtain the following results. A characteristic group is an abelian one. The torsion characteristic group is equal to thedirect sum , where p1 p2, ..., runs over all primes, henceG is a subgroup of the group of complex roots of unity. A sufficient and necessary condition for torsion free groups being characteristic is that they have only two isomorphisms....

We mean by a characteristic group a group whose subgroups are all characteristic ones. In the present paper, we obtain the following results. A characteristic group is an abelian one. The torsion characteristic group is equal to thedirect sum , where p1 p2, ..., runs over all primes, henceG is a subgroup of the group of complex roots of unity. A sufficient and necessary condition for torsion free groups being characteristic is that they have only two isomorphisms. A torsinon free group of rank is a character-istic group unless its type contains an infinite component. At last there exists no characteristic mixed groups.

每个子群都是特征子群的群称为特征群。本文解决了大部分特征群的构造问题:特征群是Abel群;在同构意义下,周期特征群是复单位根群的子群,因此,有限特征群是循环群不能是混和群。无扭交换群是特征群当且仅当它只有两个自同构,从而无扭特征群是不可分解群,用群类的概念我们成功地刻划了一秩特征群。利用特征群的理论可得到著名的F.Szasz定理。

The paper investigates the performance of catalyst Ni-Mo,which uses activatedcarbon DX-30 as a carrier for hydrogenation of Liquid products from coal Lique-faction,and preparation factors that influence the performance of catalyst.Expe-rimental results indicate that under the same reaction conditions,catalyst Ni-Mo/DX-30 is better than catalysts 3665 and 3822 in hydro-desulfurization and hydro-denitrogenation,both of which are regarded as effective catalysts in this country.It is found that performance of catalyst...

The paper investigates the performance of catalyst Ni-Mo,which uses activatedcarbon DX-30 as a carrier for hydrogenation of Liquid products from coal Lique-faction,and preparation factors that influence the performance of catalyst.Expe-rimental results indicate that under the same reaction conditions,catalyst Ni-Mo/DX-30 is better than catalysts 3665 and 3822 in hydro-desulfurization and hydro-denitrogenation,both of which are regarded as effective catalysts in this country.It is found that performance of catalyst is affected by such factors as impregnatingprocedure of active components,quantity of coating,atomic ratio of Ni/(Ni+Mo),core distribution and specific surface area.The optimum process is as follows:thecomponents are first immersed in Ni,then in Mo,coated by 35% NiO-MoO_3 byweight,and the value of Ni/(Ni+Mo) is 0.29.The number of acid and basic active cores and their distribution in the cata-lyst when prepared by different methods and under different conditions are mea-sured by pulse chromatography method,using solvent with characteristic group as anabsorbent.The number of acid and basic actives cores and their distribution varygreatly when the preparation method and processing parameters are different.It is found by electronic microscope that addition of NiO to MoO_3 will des-troy the original crystal,and produce a new loose crystal,which results in betterdispersion of active components and hence improved activity of the catalyst.

本文研究以Dx-30活性炭为载体的镍-钼催化剂在煤液化油加氢反应中的催化性能,并探讨了催化剂制备因素影响催化性能的原因。实验表明,所制备的催化剂对加氢脱硫脱氮有很好的效果,在相同的反应条件下,脱硫脱氮活性均佳于目前国内认为效果比较好的3665,3822催化剂。研究发现:催化剂活性组分的浸渍顺序、涂量、Ni/(Ni+Mo)原子比、孔径分布和比表面积均影响催化剂的性能。制备催化剂时,当先浸镍后浸钼,NiO-MoO_3涂量为35%,Ni/(Ni+Mo)原子比为0.29时,催化剂活性最高。在研究中还采用脉冲色谱技术,以有特征基团的试剂分子为吸附质,测定不同方法、条件下制备的催化剂表面酸碱中心的数目及分布情况。随催化剂制备方法、条件的不同,催化剂表面酸碱中心数目及分布有很大差别。借助电子显微镜发现,在 MoO_3中加入 NiO,破坏了原来的晶体结构,生成新的较松散晶体,提高了活性组分的分散度,改善了活性。

 
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