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previous papers
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     This conclusion is distinct from previous papers.
     最后所得结论有别于以前文献的结论
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     In this paper, the existence, number and stability of Abel equation's closed solutions axe discussed, and the results in previous papers axe improved. Moreover, the number and stability of the limit cycles of a class of polynomial system with degree n are studied under some conditions by means of the results about Abel equation.
     讨论Abel方程闭解的存在性、个数和稳定性,改进了以前文献的结果,并利用关于Abel方程的这些结果得到了一类n次多项式系统在一定条件下极限环的个数和稳定性.
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     In this paper, polymeric structure of Na_2O-CaO-SiO_2 glasses is studied on the basis of two previous papers.
     本文在前两文基础上,进一步研究了Na_2O-CaO-SiO_2玻璃的聚合结构。
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     Treating the iso-μ_A or iso-_A molecules A in the A_pB-A_qC pseudobinary system as medium and using the quasi-lattice model,the theory of partial simple solutions is presented to ex- plain the simple behaviour of ternary systems which was discussed by macroscopic thermodynamic method in the author's previous papers.
     把 A_pB-AqC 型伪二元系中的等μ_A 或等 _A 的 A 分子当作介质,采用准晶格模型,本文得到了偏简单溶液理论,用于解释前文中用宏观热力学方法讨论过的三元系所特有的一些简单行为.
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     The TOF number exceeded 8000 mol·mol -1 ·h -1 while it was only 140 mol·mol -1 ·h -1 if no solvent was used in the presence of Pd(phen) 2(PF 6) 2. This result was much higher than that reported in previous papers.
     其中使用Pd (phen) 2 (PF6 ) 2 为催化剂 ,MeBuImBF4 为溶剂时其转化频率高于 80 0 0mol·mol- 1 ·h- 1 ,较使用离子液体以前提高了 5 7倍 .
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     This paper is the improvement and development of our previous papers[1~3], in which a fuzzy random stationary model of earthquake ground motion is established by full consideration of fuzziness and randomness of earthquake loads, and a basic analysis method of fuzzy random response of structures subjected to earthquake is presented.
     本文是我们前段部分工作(文献1~3)的总结和发展,在充分考虑地震荷载的模糊性和随机性的基础上建立了地震地面运动干扰的模糊平稳随机模型,提出了在地震作用下结构模糊随机振动反应分析的基本方法。
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     In this paper, based on our previous papers [1, 2], a fuzzy random dynamic set is defined and its productive set is constructed.
     本文在我们以前的工作—文献[1,2]的基础上,首先定义了动态模糊随机集、构造了它的生成集;
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     This conclusion is distinct from previous papers.
     最后所得结论有别于以前文献的结论
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     These formulas were not reported in previous papers.
     这些公式未见前人报道。
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     Logic in Papers
     文章中的逻辑
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     On the basis of the papers of R.
     在R.
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     quit from the previous industrial;
     国有矿业企业退出原有产业;
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  previous papers
The fiberization of affine systems via dual Gramian techniques, which was developed in previous papers of the authors, is applied here for the study of affine frames that have an affine dual system.
      
In this paper, we obtain some other properties of the majorly efficient points and solutions of the multiobjective optimization presented in two previous papers of Hu.
      
The special case of the results includes the corresponding results in previous papers, extends and unifies a number of known results.
      
The equation discussed in this paper and the methods used here are extension and complement to the corresponding results of Wei Li and He Zhen's previous papers.
      
In this paper, a subdivision scheme which generalizes a surface scheme in previous papers to volume meshes is designed.
      
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Mu-feng-chin has been used as a diuretic and dropsic, etc. in Chinese medicine for many years. Four substances have been isolated by the author from a sample of Mu-fong-chi brought in Shanghai, and the details of the isolation and chemical properties of two of them, viz. Mu-fong-chin A and B, have been reported in previous papers of this series elsewhere. The present paper deals with Mu-fong-chin C, which has the molecular formula C_(18)H_(21)O_(10) and a melting point 180-181℃. Mu-fong-chin C was shown...

Mu-feng-chin has been used as a diuretic and dropsic, etc. in Chinese medicine for many years. Four substances have been isolated by the author from a sample of Mu-fong-chi brought in Shanghai, and the details of the isolation and chemical properties of two of them, viz. Mu-fong-chin A and B, have been reported in previous papers of this series elsewhere. The present paper deals with Mu-fong-chin C, which has the molecular formula C_(18)H_(21)O_(10) and a melting point 180-181℃. Mu-fong-chin C was shown to be a phenolic substance, it probably contains phenolic OH, methylenedioxy, aldehyde and methoxy groups.

提去木防巳甲乙二素的母液以醚去油、脂、蠟及色素等後,母液濃縮,以熟戊醇及热水交互處理,分離得一種棕黄色結晶。融點180—181℃,定名為木防巳丙素。分子式為C_(18)H_(21)O_(10)。其分子中可能含有酚性羟基、甲二氧基、醛基及甲氧基等,其初步暫定構造式為

The simplified Coal characteristic Coefficient β' = 2.35, as proposed in author's two previous papers to ho used with Vr for coal classification, has been for the first time repeatedly proved as shown in many graphs (Fig. 2-Fig 9) to represent (a) the foundamental characteristics of coal, like caking property, heating value, plastic layer thickness. etc. (b) the quality of the side Chain of the coal crystal (c) the percentage proportion of vitrain composition with respect to the other constitutents in...

The simplified Coal characteristic Coefficient β' = 2.35, as proposed in author's two previous papers to ho used with Vr for coal classification, has been for the first time repeatedly proved as shown in many graphs (Fig. 2-Fig 9) to represent (a) the foundamental characteristics of coal, like caking property, heating value, plastic layer thickness. etc. (b) the quality of the side Chain of the coal crystal (c) the percentage proportion of vitrain composition with respect to the other constitutents in petrographic components, during the different stages of coalification. (2) The simplified coal characteristic coefficient β' can be used to substitute the free swelling index, Roga number L.R. and the plastic layer thickness y etc in the coal classification of type together with the volatile matter on combustible basis VP for the coal classification of rank. (graph 10-graph 16) (3) Besides the VP and β' coal classification system,(Fig - 18), Carbon content on combustible basis CP with the free hydrogen H°= (HP=)for coal classification (Fig-23), VP vervus classification (Fig.-24), VP versus H°(Fig. -25) and VP versus (Fig-26) coal classification are also proposed. Comparisons of the different systems are made with the conclusion of adopting VP versus β' as the most logical system. (4) In the VP versus β' graph; the plastic layer thickness y curves (Fig.-27) represent the the rate of vitrinification during the different stages of coalification due to the different constituents of principal peat-forming plant substances. So a new international three-parameter coal classification system is proposed with the volatile matter on combustible basis VP as the first parameter and the simplified coal characteristic coefficient β' as the second principal parameter with the thickness of plastic layer y in mm as the third parameter. (Fig-28)

(1)简化特性系数β’=2.35代表着煤的分子结构中侧链的本质,而纯燃质挥发分 VP代表着煤的原始物质中侧链与核心部分的相对数量. (2)简化特性系β',即自由氢碳比率函数,是煤岩成分比例不同的标志;角质类和不透明质与透明基质数量的相对比例的标志;是镜煤质与非镜煤质含量相对数值比例的标志,亦即是镜煤化程度的标志。 (3)简化特性系β'反映了煤的特性,焦油产率,炼焦性质,胶层厚度,发热量及碳含量,氢含量,氧含量等,并有充分的证明。 (4)简化特性系β’揭露了近百年来国际间对於煤的特性的秘密,而是国际上有最完善的理论根据的分类指标。 (5)因此,作者建议(a)用VP及β’来作为中国煤工艺技术分类指标(6)用VP,β'与y作为国际煤分类指标,其中 厚度y,根据作者的见解,代表着煤在碳化过程中,凝 化的速度的标志。

In two previous papers[1,2] the author presented a generalized theory of local normal modes by introducing the method of slowly varying coefficients-a mathematical method to solve systems of first order linear differential equations with slowly varying coefficients, which are associated with problems of multi-coupled modes in irregular waveguides. However, the theory presented therein was not in a form to adapt itself to problems involving abrupt Changes of the waveguide parameters, which are inevitable...

In two previous papers[1,2] the author presented a generalized theory of local normal modes by introducing the method of slowly varying coefficients-a mathematical method to solve systems of first order linear differential equations with slowly varying coefficients, which are associated with problems of multi-coupled modes in irregular waveguides. However, the theory presented therein was not in a form to adapt itself to problems involving abrupt Changes of the waveguide parameters, which are inevitable in any practical transmission system. The purpose of the present paper is to consider such abrupt changes in the light of the above theory, so that the concept of local normal modes may be used to describe a broader class of problems.

在前两篇论文中,作者提出了一种求解缓变系数一阶常微分方程组的数学方法——“缓变系数法”,从而建立了多波型波导本地简正波的广义理论。但是,该文所提的理论没有考虑到波导参数突然变化的情形,而这在任何实际的传输系统中是不可避免的。本文的目的是从耦合简正波理论的观点来研究波导特性的突变。这样,就使本地简正波的概念能够用来描述更多的波导传输问题。

 
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