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knowledge     
相关语句
  知识
     RESEARCH ON KNOWLEDGE DISCOVERY BASED ON CONCEPT LATTICE MODEL
     基于概念格模型的知识发现研究
短句来源
     The Research of Knowledge Management-Based Modern Office Information System
     基于知识管理的现代办公信息系统的研究
短句来源
     Study on Uncertain Reasoning Theory and Knowledge Discovery
     关于不确定性推理理论与知识发现的研究
短句来源
     The study about absorptive capability promotion through knowledge innovation process of enterprise
     企业知识创新过程中增进吸纳能力问题研究
短句来源
     A Research into the Taxation in the Development of the Knowledge Economy
     知识经济发展中的税收问题研究
短句来源
更多       
  认识
     Practice and Knowledge of Vortex Spinning
     涡流纺纱的实践与认识
短句来源
     Cementing for 7" Production Casing of the Directional Well Zhong-48 and Some Initial Knowledge
     中48定向井7″油层套管固井及其初步认识
短句来源
     On the Elementary knowledge of Geoscience Background in Ecological Environment
     关于生态环境的地学背景的基本认识
短句来源
     NEW KNOWLEDGE OF DISTRIBUTION OF HORIZONTAL DEFORMATION CAUSED BY GROUND MOVEMENT AND "YY" PROGRAM
     水平移动变形分布规律的新认识及“YY”程序
短句来源
     Fuzzy Knowledge about Physical Quality of Children and Juvenile and the Weather's Factor in Jiangxi
     对我省儿童、少年身体素质与气象因素的Fuzzy认识
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更多       
  学识
     In this paper, some problems and ways of the quality education for college students are discussed on the ideology, knowledge, morals, psychology, physical health and creativity of the teachers.
     本文从精神文明建设入手 ,通过教师必备的思想政治、学识知识、道德修养、心理健康、身体健康和质能创新六个方面的素质 ,谈了高等师范院校学生的素质教育方面存在的问题与对策
短句来源
     The shortage of this article is, because of the lack of knowledge and skill, I should perfect the study of the depth and extent in economic new problem and apply and analyse the prctice.
     本文的不足之处在于,由于自己学识不足、功夫不深,对经济新问题在研究的深度和广度上还有待完善、对经济统计数据的应用与分析不够,我将在以后的工作实践中,通过不断学习弥补这些不足。
短句来源
     But students' internalization of knowledge is inseparable from teachers' guidance, and teachers' personality power, knowledge power and expressive power demonstrated in their teaching are still very important to the students' internalization of knowledge.
     但学生知识的内化离不开教师的引导 ,教师在教学过程中表现出的人格力量、学识力量和表现力量仍对学生知识内化产生非常重要的作用 ,具有不可替代的社会角色
短句来源
     The characteristics of his writing and his way of pursuing reveal the essential quality of a successful military jounalist in the new century, i.e., fine temperament, spirit of innovation, profound knowledge and self-cultivation, and a sound structure of intelligence and ability.
     他的军事新闻采写特色及追求奋斗的历程启示我们 :军事新闻工作者要有“识为体才为用”的智能结构、“若无新变 ,不能代雄”的创新精神、“风格也是人”的气质性格 ,以及怀抱荆山之玉、手握灵蛇之珠的学识修养 ,这是跨世纪军事新闻工作者走上成功之路的必备素质。
短句来源
     Hence teachers, especially young teachers ought to have solid basis of profession, comprehensive knowledge and healthy mentality, and colleges should supply situation and opportunities for them.
     因此,高校教师、特别是青年教师应具备的基本素质是思想品德高尚、治学严谨、学识渊博,即应具有良好的思想品德、扎实的专业基础、广博的综合文化知识及健全的心理素质。 青年教师应努力朝这个方向发展;
短句来源
更多       
  知识
     RESEARCH ON KNOWLEDGE DISCOVERY BASED ON CONCEPT LATTICE MODEL
     基于概念格模型的知识发现研究
短句来源
     The Research of Knowledge Management-Based Modern Office Information System
     基于知识管理的现代办公信息系统的研究
短句来源
     Study on Uncertain Reasoning Theory and Knowledge Discovery
     关于不确定性推理理论与知识发现的研究
短句来源
     The study about absorptive capability promotion through knowledge innovation process of enterprise
     企业知识创新过程中增进吸纳能力问题研究
短句来源
     A Research into the Taxation in the Development of the Knowledge Economy
     知识经济发展中的税收问题研究
短句来源
更多       

 

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      knowledge
    We shall show that the inverse spectral problem can be used to construct sampling type theorems from the knowledge of the sampling points only.
          
    Calculations of those coefficients and many other situations where frames occur, requires knowledge of the inverse frame operator.
          
    A quantitative structure-retention relationships (QSRR) approach, as one of the all-important areas in modern chemical science, gives knowledge that is practical and necessary for drug design, combinatorial, and medicinal chemistries.
          
    The starting material used abroad is expensive and the yield is low (16%-28%); furthermore, to our best knowledge, no characterization of Compound A is available in the open literature.
          
    An investigation on theory of information-knowledge-intelligence transforms
          
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    The so-called "truss rigid frames" are those rigid frames with trusses as their horizontal beams, of which the two ends are rigidly connected to columns. Within the author's knowledge, all the methods available at present for analyzing such rigid frames are based on Certain special assumptions such as (1) that the positions of the points of contra-flexure in all the columns are previously known; (2) that the end rotations of a truss may be reprensented by that of its assumed line of axis as in the case...

    The so-called "truss rigid frames" are those rigid frames with trusses as their horizontal beams, of which the two ends are rigidly connected to columns. Within the author's knowledge, all the methods available at present for analyzing such rigid frames are based on Certain special assumptions such as (1) that the positions of the points of contra-flexure in all the columns are previously known; (2) that the end rotations of a truss may be reprensented by that of its assumed line of axis as in the case of an ordinary beam; or (3) that the end verticals of trusses may be given certain prescribed deformations. Of course, the adoption of any of such assumptions leads to only approximate results inconsistent with the actual deformations of such rigid frames under any loading. Heretofore, the author did not know any correct method for analyzing such rigid frames. In this paper, the author presents two principles of the correct analysis of truss rigid frames. The first principle is that of "moment action on column" for computing the angle change constants of columns, and the second principle is that of "effect of span-change in truss" for computing the angle and span change constants of trusses.As, for computing the angle change constants of a truss, the dummy unit moment is a couple applied to its end verticals, so, for computing the angle change constants of a column, the dummy unit moment must also be a couple applied to the section of column rigidly connected to the end of a truss, in order to effect a consistent deformation at the joint of the two. This is the first principle.A truss just like a curved or gabled beam of which the effect of span-change can not be neglected, so truss rigid frames belong to the same category of what may be called "span-change" rigid frames such as rigid frames with curved or gabled beams. Therefore the span-change constants of trusses should be included besides their angle-change constants for analyzing truss rigid frames. This is the second principle.With the constants of columns and trusses are all computed in accordance with respectively the first and second principles mentioned above, truss rigid frames may be analyzed by any method including the effect of span-change as in the case of rigid frames with curved or gabled beams, and the results thus obtained will be exactly the same as by the method of least work or deflections without any special assumptions.In this paper, after the two principles are described and the formulas for computing the constants of columns and trusses are derived, the correctness of the two principles are then proved by the methods of least work, deflections and slope-deflection. A two-span truss rigid frame is analyzed under the following three conditions:Ⅰ. Applying both of the two principles to obtain the correct results.Ⅱ. Applying only the first principle to show the discrepancies of neglecting the effect of span-change in trusses as born out by comparing the results of Ⅱ with Ⅰ.Ⅲ. Applying neither of the two principles, and the truss rigid frames being analyzed by the special assumption (2) mentioned above with the line of axis at the bottom chord of truss, in order to show the discrepancies of neglecting the moment action on column as born out by comparing the results of Ⅲ with Ⅱ. For the sake of brevity, only the results are given in Tables 1 to 5 without computations in details.Although the discrepancies of neglecting the moment acticn on column are only slight as shown by comparing the results of Ⅲ with Ⅱ in Tables 2, 4 and 5, there is no reason why special assumptions should not be replaced by the correct principle of moment action on column to obtain correct results. As shown by comparing the results of Ⅱ with Ⅰ in Tables 2, 4 and 5, the discrepancies by neglecting the span change in trusses are generally considerable and, in certain particular part, as large as 3000%. Therefore, for the safe and economical design of truss rigid frames, the effect of span-change in trusses should not be neglected in their analysis.Finally, for analyzing co

    所謂“桁架剛構”即以桁架為横梁与柱相剛接之剛構。現下採用分析剛構之任一方法,以分析此項剛構时,均須採用種種特殊之假定而得近似之結果。據著者所知,中外書刊中似尚无此項剛構之正確分析法。於本文中,著者發表关於桁架剛構正確分析之兩項原理,即柱頂力矩作用与桁架跨变影響之兩项原理。前項原理使柱頂段之角夔与桁架端豎桿相同,以符合柱与桁架剛接处之連续性。後項原理指出桁架与曲梁(即拱)及折梁(即山墙式梁)相同係一種“跨变横梁”,故桁架刚構亦与拱式及山墙式剛構相同,係一種“跨变剛構”。若根據此兩项原理,分别计算柱与桁架兩端的撓曲常数,再用分析跨变刚構之任一分析法以分析此項刚構,則所得之枯果,与不作任何特殊假定用最少功法或变位法所得者完全相同。本文先說明此兩项原理及根據此兩項原理计算柱与桁架撓曲常數之方法。次取一最簡單之桁架刚構为例,證明此丙項原理之正確性。桁架刚構既与拱式及山墙式刚構同属於跨变刚構一類型,分析後者之任何方法均可用以分析前者,本文无須贅述。但取一兩跨之桁架刚構為例,列举所得之正確結果,与用近似法所得者相比较,藉以顯出近似法有相當巨大之差誤。關於階形之複式桁架刚構之分析,本文用“代替桁架”之辦法,但只說明其原則,不...

    所謂“桁架剛構”即以桁架為横梁与柱相剛接之剛構。現下採用分析剛構之任一方法,以分析此項剛構时,均須採用種種特殊之假定而得近似之結果。據著者所知,中外書刊中似尚无此項剛構之正確分析法。於本文中,著者發表关於桁架剛構正確分析之兩項原理,即柱頂力矩作用与桁架跨变影響之兩项原理。前項原理使柱頂段之角夔与桁架端豎桿相同,以符合柱与桁架剛接处之連续性。後項原理指出桁架与曲梁(即拱)及折梁(即山墙式梁)相同係一種“跨变横梁”,故桁架刚構亦与拱式及山墙式剛構相同,係一種“跨变剛構”。若根據此兩项原理,分别计算柱与桁架兩端的撓曲常数,再用分析跨变刚構之任一分析法以分析此項刚構,則所得之枯果,与不作任何特殊假定用最少功法或变位法所得者完全相同。本文先說明此兩项原理及根據此兩項原理计算柱与桁架撓曲常數之方法。次取一最簡單之桁架刚構为例,證明此丙項原理之正確性。桁架刚構既与拱式及山墙式刚構同属於跨变刚構一類型,分析後者之任何方法均可用以分析前者,本文无須贅述。但取一兩跨之桁架刚構為例,列举所得之正確結果,与用近似法所得者相比较,藉以顯出近似法有相當巨大之差誤。關於階形之複式桁架刚構之分析,本文用“代替桁架”之辦法,但只說明其原則,不列出公式及算例。

    The investigation of the properties of loess constitutes a highly specialized branch of soil engineering. The design and construction of foundations and earthwork in this soil involve many uncertainties that have not been solved. Among all uncertainties the following are considered the most important items:(1) the changes of bearing capacities caused by variations in the strength of the cohesive bond due to changes in its moisture content, and(2) the methods of ascertaining the amount of its settlement under...

    The investigation of the properties of loess constitutes a highly specialized branch of soil engineering. The design and construction of foundations and earthwork in this soil involve many uncertainties that have not been solved. Among all uncertainties the following are considered the most important items:(1) the changes of bearing capacities caused by variations in the strength of the cohesive bond due to changes in its moisture content, and(2) the methods of ascertaining the amount of its settlement under the combined action of foundation loads and of percolating water.In order to prevent foundations against settlement the "Provisional Code for the Design of Natural Foundations" gives a set of rules of precautions for designers to observe, which include the prevention of water from getting into the foundations, artificial strengthening of the soil and the designing of superstructures in such a way that they will adjust themselves to settlement. Before the adoption of any of such precautions could be decided, the accuracy in evaluating the amount of possible settlement of the soil is a problem of prime importance, which unfortunately cannot be satisfactorily obtained.This paper attempts to give some predominent characteristics of loess, the points of contradiction between the assumptions made in the old designing code and the results derived from actual work, a comparison of the salient features of the old code with the new code of ordinance of the U. S. S. R., 1955, and some suggestions regarding further developments of this branch of soil engineering. Several cases of actual construction work in loess in recent years are also cited which, owing to our incomplete knowledge of the soils, nature, have inevitably either caused unnecessary expenses to the works, or brought about results detrimental to the stability of structures.In this branch of soil engineering have, therefore, many difficulties yet to be contended with. It is hoped that this paper could be of some reference value to research engineers in this line and the knowledge of loess be further developed in view of the increasing pressure of necessity in our present construction work.

    黄土工程特性的研究,是目前土壤力学一个重要部門。有关黄土区的地基与土工工作、我們經常根据“天然地基設計暫行規范”上条文来設計,但对於基土沉陷量的估計,往往不易准确,而造成工程上的困难与事故。这是現时没有得到解决的問題。本文闡述黄土的若干特性,旧規范条文上的缺点,苏联1955年批准的“建筑法規”内改善黄土部分条文的意义,以及目前国内研究与發展的方向。其中主要說明黄土由於荷載及含水量兩項的綜合影响对其沉陷性能上所發生的变化,以及估計这項变化较合理的方法,以期在研究工作上作进一步的認識。

    This paper reports on biological investigations on two Scelionid egg-parasites,Telenomus dendrolimusi Chu and Telenomus sp., of the pine caterpillar (Dendroli-mus punctatus), and their parasitization under field conditions at Nanking, Kiangsuand Changshan, Chekiang during 1954 to 1955. The effect of cold storage on theeggs both of pine caterpillar and the parasites is discussed. Telenomus dendrolimusi is the well-known egg parasite of pine caterpillar inChina. Formerly there was no knowledge that Telenomus...

    This paper reports on biological investigations on two Scelionid egg-parasites,Telenomus dendrolimusi Chu and Telenomus sp., of the pine caterpillar (Dendroli-mus punctatus), and their parasitization under field conditions at Nanking, Kiangsuand Changshan, Chekiang during 1954 to 1955. The effect of cold storage on theeggs both of pine caterpillar and the parasites is discussed. Telenomus dendrolimusi is the well-known egg parasite of pine caterpillar inChina. Formerly there was no knowledge that Telenomus sp. parasitizes the cater-pillar egg in China, and this is the first report of its parasitization. Differences bothin the morphological characters and physiological reactions of the adult and larvaof Telenomus dendrolimusi and Telenomus sp. show that they are two different spe-cles. According to data at hand, Telenomus sp. is distributed in Nanking, Kianin,(Kiangsu Province), Changshan(Chekiang Province) and Canton(Kwangtung Pro-vince). It forms about 80% of the two Scelionids found in Nanking. Telenomus sp. overwinters in the larval stage in the egg-shall of its host, Ly-mantria sp. (Lepidoptera, Lymantriidae) and the adult emerges from the time whenthe first-brood Dendrolimus eggs appear the following spring. It does not perish either from low temperature in winter or from shortage of food or hosts in spring.So it is saperior to Telenomus dendrolimusi from the standpoints of biological con-trol practice. In Nanking, Telenomus dendrolimusi has 10-12 generations and Telenomus sp.has 8-9 generatiom annually. The proportion of females is about 80%. A female ofTelenomus sp. parasitizes 30 host-eggs in average, this amount being twice as manyas parasitized by Telenomus dendrolimusi. It oviposites all its eggs within a shortperiod and is easy to rear on a large scale under laboratory conditions. One-dny-old pine caterpillar egg was stored in a refrigerator at 4℃ for onemonth, the development of the embryo was not effected. The mature larvae ofTelenomus sp. are best suited for cold storage. Adults emerging from these eggsafter treatment produce normal healthly progeny without showing any ill effects.

    1.本文主要研究松毛虫卵的两种黑卵蜂(Telenomus dendrolimusi Chu及Teleno-mus sp.,Scelionidae,Hymenoptera)的生物学特性;及1954—55年江苏南京和浙江常山等地林间的寄生情况,同时对松毛虫卵及黑卵蜂的冷藏也进行了试验。 2.两种黑卵蜂中,松毛虫黑卵蜂(Telenomus dendrolimusi Chu)与毒蛾黑卵蜂(Telenomus sp.)不但在形态上有所不同。而且在生活习性及各期虫态对低温的反应上亦各异,证明它们确系不同的两种。毒蛾黑卵蜂在我国系首次记载寄生于松毛虫卵中,现知在江苏南京、江宁,浙江常山及广东广州均有分布,在南京的黑卵蜂中占80%以上。 3.毒蛾黑卵蜂以幼虫态在寄主卵内越冬,利于冬季生存。越冬代成虫羽化时间接近松毛虫第1代卵出现期。且有松毒蛾(Lymantria sp.,Lymantriidae,Lepidoptera)作为补充寄主。这些特性均较松毛虫黑卵蜂为优。 4.室内外饲育结果,知松毛虫黑卵蜂在南京年可发生10—12代,毒蛾黑卵蜂年有8—9代,性比雌蜂占80%左右,毒蛾黑卵蜂破坏寄主卵粒平均为30粒左右比松毛虫黑卵蜂平...

    1.本文主要研究松毛虫卵的两种黑卵蜂(Telenomus dendrolimusi Chu及Teleno-mus sp.,Scelionidae,Hymenoptera)的生物学特性;及1954—55年江苏南京和浙江常山等地林间的寄生情况,同时对松毛虫卵及黑卵蜂的冷藏也进行了试验。 2.两种黑卵蜂中,松毛虫黑卵蜂(Telenomus dendrolimusi Chu)与毒蛾黑卵蜂(Telenomus sp.)不但在形态上有所不同。而且在生活习性及各期虫态对低温的反应上亦各异,证明它们确系不同的两种。毒蛾黑卵蜂在我国系首次记载寄生于松毛虫卵中,现知在江苏南京、江宁,浙江常山及广东广州均有分布,在南京的黑卵蜂中占80%以上。 3.毒蛾黑卵蜂以幼虫态在寄主卵内越冬,利于冬季生存。越冬代成虫羽化时间接近松毛虫第1代卵出现期。且有松毒蛾(Lymantria sp.,Lymantriidae,Lepidoptera)作为补充寄主。这些特性均较松毛虫黑卵蜂为优。 4.室内外饲育结果,知松毛虫黑卵蜂在南京年可发生10—12代,毒蛾黑卵蜂年有8—9代,性比雌蜂占80%左右,毒蛾黑卵蜂破坏寄主卵粒平均为30粒左右比松毛虫黑卵蜂平均15粒左右为高。产卵期较集中,且在室内容易繁殖。 5.从发育1天的松毛虫卵冷藏于4℃冰箱中1个月不影响毒蛾黑卵蜂的寄生发育。毒蛾黑卵蜂在4℃冰箱中冷藏,以老熟幼虫为最好,冷藏1个月后,对其产生后代数无影

     
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