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repeat     
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  重复
     Improvement & Application of Telomeric Repeat Amplification Protocol(TRAP)and Research on Telomerase characteristic
     端粒重复扩增程序(TRAP)的改进和应用以及端粒酶酶学性质研究
短句来源
     The Analysis of Tandem Repeat Sequences in the Genome of Chinese Shrimp (Fenneropenaeus Chinensis), and the Development and Application of Molecular Markers
     中国对虾基因组串联重复序列分析及其分子标记的开发与应用
短句来源
     Automatic Step and Repeat Camera with Precision Positioning by Laser Interferometer
     激光干涉定位自动分部重复相机
短句来源
     Changes of Contents of Major and Trace Elements in Mouse Brain Tissue During Acute and Repeat Exposure to Hypoxia
     急性重复缺氧动物脑中常量、微量元素含量的变化
短句来源
     Damage of optical film by high repeat frequency pulsed laser
     高重复频率脉冲激光对光学薄膜的损伤
短句来源
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  重复序列
     Objective To study the genetic polymorphism of 15 short tandem repeat (STR) (D2S1338, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51, D19S433, D21S11, CSF1PO, TPOX, TH01, vWA, FGA) in Maonan minority of Guangxi province.
     目的为了解中国广西毛南族15个短串联重复序列(short tandem repeat,STR)(D2S1338、D3S1358、D5S818、D7S820、D8S1179、D13S317、D16S539、D18S51、D19S433、D21S11、CSF1PO、TPOX、TH01、vWA、FGA)的遗传多态性。
短句来源
     Objective To investigate the genetic polymorphism of fifteen short tandem repeat(STR) loci(D3S1358,THO1,D21S11,D18S51,VWA,CSF1PO,D8S1179,TPOX,FGA,D5S818,D13S317,D7S820,D16S539,D19S433 and D2S1338) in Ningxia Hui ethnic population.
     目的研究宁夏回族人群15个人类短串联重复序列位点(STR)D3S1358、THO1、D21S11、D18S51、vWA、CSF1PO、D8S1179、TPOX、FGA、D5S818、D13S317、D7S820、D16S539、D19S433、D2S1338的遗传多态性。
短句来源
     Genetic polymorphism of short tandem repeat loci D1S549,D3S1754 and D12S375 in Qingdao Han population
     青岛地区汉族群体短串联重复序列基因座D1S549、D3S1754和D12S375的遗传多态性
短句来源
     Objective To investigate the alleles and genotypes frequency of 10 short tandem repeat (STR) loci (DXS101,DXS6789,DXS6799,DXS6804,DXS7130,DXS7132,DXS7133, DXS7423, HPRTB, DXS8378)on X chromosome of Chinese Hui nationality population.
     目的研究宁夏回族群体X染色体上的10个短串联重复序列(DXS101、DXS6789、DXS6799、DXS6804、DXS7130、DXS7132、DXS7133、DXS7423、HPRTB、DXS8378)的基因及基因型频率分布。
短句来源
     hRI consists of 15 leucine-rich repeat(LRR).
     hRI是由15个亮氨酸重复序列(Leucine-rich repeat, LRR)组成的。
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  反复
     Under 4% strain, the number of repeat tensile fatigue rupture is 38560 cycles and the recovery rate keeps up 100%.
     在4%的固定应变下,反复拉伸疲劳断裂次数高达38560次,形状回复率为100%。
短句来源
     the repeat of the party's intellectual policy is from 1957 to October,1976;
     1957年至1976年10月,党的知识分子政策出现反复;
短句来源
     Method The primary and passaged MSCs were exposed to different concentrations (3, 5 and 10μmol/L)of 5-azacytineusing differentmethods (single or repeat treatment).
     方法 用不同浓度 (3,5 ,10 μmol/L)的 5 氮胞苷以各种方法 (一次处理与反复处理 )诱导原代及传代MSCs。
短句来源
     Under 4% stra in, the repeat tensile fatigue rupture was as high as 706 circles, 4 4% higher than that of single crystal specimen reported in the literat ure.
     在4%固定应变下,反复拉伸的疲劳断裂次数高达706次,比文献所列单晶的断裂次数提高44%。
短句来源
     The catalyst has good performances and good application foreground by repeat tests.
     通过反复试验证明这种触媒材料具有优良的性能和广阔的应用前景。
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  重演
     According to futures trade professional prognostic three principles: The market behavior forgives everything, price to turn into by trend, the history will repeat, putting the point that the information mining only in the strike price, by analyzing the timing data coming from the current agreement we get the possible strike price of the next day, at the same time, by mining the relating relation between the current agreement and the historical agreement, we forecast the whole direction of the next period of time.
     本文根据期货交易专业预测中采用的市场行为包容一切、价格以趋势方式演变和历史会重演三原则,将信息挖掘的重点仅放在结算价一项上,通过对当前合约已形成的时序数据进行分析得到下一交易日可能产生的结算价,同时通过对当前合约与历史合约关联关系的挖掘得到历史相关合约,预测下一段时间内交易的整体走势。
短句来源
     Enlightenment of “the History will Repeat Itself”and Jiang'en's Anniversary Commemoration Theory
     “历史会重演”与江恩周年纪念理论的启示
短句来源
     This paper expounds the concept and connotation of “the History will Repeat Itself”and Jiang'en's Anniversary Commemoration Theory, analyses on the effectiveness and practicability of Jiang'en's Anniversary Commemoration Theory and its enlightenment on investors to make stock investment taking the index of Shanghai Stock-exchange as the example.
     阐述了“历史会重演”与江恩周年纪念理论的概念与涵义,并以上证指数为例分析了江恩周年纪念理论的有效性和实用性,及对投资者进行股票投资的启示。
短句来源
     Microcomputer Interlock System has some functions of reliable and fail-safe characteristics, real time characteristics, structure modularization and standardization, including such as some functions of fault diagnoses and analysis, the repeat showing, remote communication.
     计算机联锁系统除了具有可靠性、故障—安全性、实时性、结构模块化与标准化外,还具有故障诊断与分析、重演、远程通信以及其他管理功能。
短句来源
     To prevent the repeat of the historic tragedy of the Black City,through exploring and thinking over the historic rise and decline of the Black City and its surrounding environment,a number of recommendations and measures to save the Oasis、 control and protect the ecological environment were put forward,including defending the peace、building water conservation projects、protecting and rejuvenating vegetation etc.
     为了防止黑城历史悲剧的重演,通过对黑城及其周围环境历史兴衰的探讨与思考,提出了维护和平与稳定、兴修水利、保护和更新植被等一系列抢救绿洲、治理和保护生态环境的建议和措施。
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      repeat
    A cross-layer adaptive transmission scheme combined with selective repeat automatic repeat request (SR-ARQ) is proposed.
          
    By using simple sequence repeat (SSR) markers, we mapped the two semidwarf genes, sd-1 and sd-t2 on chromosomes 1 and 4, respectively.
          
    We investigated the genetic variation within 32 accessions distributed to 14 species and one variety by using ISSR (inter-simple sequence repeat) markers.
          
    Previous work increases the dependence of changes in blood coagulation on its initial value upon repeat exercise, without influencing the relationship between alterations in the fibrinolytic activity of whole blood and its value before exercise.
          
    The method to search for similarity between highly divergent sequences may be used to find the genome fragments from various ancient repeat families and from various gene families.
          
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    Once the configuration of a rigid frame (including the lengths, crosssections, supporting connections, etc. of all its bars) has been laid out, there exists one set of frame constants, which expresses the elastic characteristics of the frame, and, therefore, is independent of its loading condition. By employing these frame constants, not only the computations of the end moments of all the bars under any one loading condition are greatly simplified, but also, when the frame is to be analyzed under several loading...

    Once the configuration of a rigid frame (including the lengths, crosssections, supporting connections, etc. of all its bars) has been laid out, there exists one set of frame constants, which expresses the elastic characteristics of the frame, and, therefore, is independent of its loading condition. By employing these frame constants, not only the computations of the end moments of all the bars under any one loading condition are greatly simplified, but also, when the frame is to be analyzed under several loading conditions, the computations related and not related to loading are distinctly separated, and, therefore, the repeated portion of computations for each loading condition, unavoidable otherwise, is entirely eliminated. As most of the rigid frames encountered in practice have to be analyzed always under many loading conditions, the practical superiority of the methods employing frame constants over other methods is thus obvious.

    任一刚構之形式(包括共中各桿之長度,截面,及支承等情形)既經擬定之後,該剛構即有一套表示共彈性特質而與其荷載無關之刚構常數存在。採用此項剛構常數,不但其在任一荷載情形之下桿端力矩計算,大大簡化,而且在多種荷載情形下進行分析時,可將其与荷載無關及有關之二部份計算完全分开,因此省去他種分析法在每一種荷載情形下所必須重複之部份計算。實用之剛構,既常須在多種荷載情形下進行分析,故採用剛構常数分析法在實用中之優越性,至為顯明。採用剛構常数之分析法太約以立特(Wilhelm Ritter)教授之定點法為最早,而於表示剛構常數之各種方式中,亦以定點位置最為簡明,最為基本。本文首先指出:於任一剛構中,每桿之左右兩端各有一個而且祇有一个有獨立性之基本剛構常數,其計算係二個各向左右進行不相牽涉之步驟,但為計算剛構常數本身及桿端力矩之便利计,常須於每桿之左右二端,各另加計算一個無獨立性之輔助剛構常數,惟此外並不需要任何其他第三個剛構常数。恰於廿年以前,我國林同棪教授在國內外發表其力矩一次分配法(林氏原稱其法為“直接力矩分配法”,似欠妥),採用桿端之“約束剛度係數”(restraining rigidity factor),“修正傳...

    任一刚構之形式(包括共中各桿之長度,截面,及支承等情形)既經擬定之後,該剛構即有一套表示共彈性特質而與其荷載無關之刚構常數存在。採用此項剛構常數,不但其在任一荷載情形之下桿端力矩計算,大大簡化,而且在多種荷載情形下進行分析時,可將其与荷載無關及有關之二部份計算完全分开,因此省去他種分析法在每一種荷載情形下所必須重複之部份計算。實用之剛構,既常須在多種荷載情形下進行分析,故採用剛構常数分析法在實用中之優越性,至為顯明。採用剛構常数之分析法太約以立特(Wilhelm Ritter)教授之定點法為最早,而於表示剛構常數之各種方式中,亦以定點位置最為簡明,最為基本。本文首先指出:於任一剛構中,每桿之左右兩端各有一個而且祇有一个有獨立性之基本剛構常數,其計算係二個各向左右進行不相牽涉之步驟,但為計算剛構常數本身及桿端力矩之便利计,常須於每桿之左右二端,各另加計算一個無獨立性之輔助剛構常數,惟此外並不需要任何其他第三個剛構常数。恰於廿年以前,我國林同棪教授在國內外發表其力矩一次分配法(林氏原稱其法為“直接力矩分配法”,似欠妥),採用桿端之“約束剛度係數”(restraining rigidity factor),“修正傳遞係數”(modified carry-over factor),及“修正勁度”(modified stiffness)為

    Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in...

    Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in elliptical coordinates involving 5 parameters and obtained 3.603 eV for the binding energy of H_2, which is to be compared with the ex- perimental value of 4.72 eV. In the present investigation we have proposed a new type of trial eigenfunction for the molecular orbital: (1) with p = centers a, b, g, c, d,…… i = electron 1 or 2 (2) where the p's are centers along the bond axis a-b (Fig. 1). In this simple problem both the Fock and Hartree methods yield the same result. The molecular orbital ψ must satisfy the following integral equation: (3) where ε is the energy of the molecular orbital, F is the Fock operator which is equal to H+G(1), while H is the one-electron Hamiltonian operator: H = -1/2▽~2-1/r_a-1/r_b (4) and G(1) is the interaction potential (5) Substituting (1) into (3), we obtain the linear combination coefficients c_p, which must satisfy the following secular equation: (6) where is the solution of the secular determinant and The F_(pq)'s are not at first known, but depend upon the c_p's. A method of successive approximation must therefore be adopted. A set of c_p values may be assumed, the F_(pq)'s calculated, the secular determinant (7) solved, and a new set of c_p values found. This process is repeated until a "self-consistent" set of c_p values is obtained. The above procedure was first proposed by Roothaan (1951), not for H_2 but for more complex molecules. It was called by him the "LCAO SCF (linear combination of atomic orbitals self-consistent field) method". The new feature of the present investigation is that we not only use LCAO but also LCNAO (linear combination of non-atomic orbitals, such as x_g, x_c, x_d, …). The order of secular determinant (7) may be reduced to half if we replace the eigen- functions x_a, x_b .... by their symmetrical and anti-symmetrical linear combinations x_a + x_b and x_a-x_b. Numerical calculations have been carried out both for the three- and the two-centered molecular orbitals. The three-centered molecular orbital is (10) (11) where S_(ab) and S(ag) are the overlapping integrals between x_a and x_b, and between x_a and x_g respectively. The parameters a and g have 'been obtained to give minimum energy by the method described above. They are a=l.190, g=0.22, and the binding energy is 3.598 eV, which is almost as good as that obtained by Coulson (3.603 eV) using a trial function of 5 parameters. The two-centered molecular orbital is (12) (13) which gives a maximum binding energy of 3.630 eV for a=1.190 and R~(ac)=R(bd)=0.105 (Fig. 1). This result is 'better than Coulson's. If we allow different values for the ex-ponent α in x_a and x_g in equation (11), or if we use a four-centered molecular orbital, such as ψ=a(x_a + x_b) + b(x_c + x_d) with four parameters, namely α_a=α_b, α_c=α_d, R_(ac)=R_(bd) and the ratio b/a, it is possible to obtain a still better result. Extension of the present method to the treatment of more complex molecules is now under investigation.

    (1)討論了用自洽勢場多中心分子軌道法來處理H_2分子的一般方法。 (2)用僅含兩個參變數三中心分子軌道進行了具體計算,求得H_2分子的結合能為3.598eV,接近於Coulson用五個參變數的雙中心分子軌道所得的結果(3.603eV)。 (3)用不在原子核上的兩中心的分子軌道求得H_2分子的結合能為3.630 eV,此上述結果為好。並指出如用不同的α值和四個或四個以上中心的分子軌道,很有可能得到更好的結果。以上處理方法有可能推廣到比H_2更為複雜的分子。

    Owing to the deficiency of lysine in zein, the hydrolysate of this protein was used as the main source of amino acids in the preparation of the medium for microbiological estimation of lysine using Lcuconostoc mcsentcroides P-60. as the test ing microorganisms. Suitable quantities of tryptophane, arginine, cystine, glycine and serine were used to supplement the medium.The maximum rate of acid production by the microorganism in this medium is much higher than that in the medium used by Horn et al for the same...

    Owing to the deficiency of lysine in zein, the hydrolysate of this protein was used as the main source of amino acids in the preparation of the medium for microbiological estimation of lysine using Lcuconostoc mcsentcroides P-60. as the test ing microorganisms. Suitable quantities of tryptophane, arginine, cystine, glycine and serine were used to supplement the medium.The maximum rate of acid production by the microorganism in this medium is much higher than that in the medium used by Horn et al for the same purpose. The latter medium shows a rapid increase of acid production up to 80 μg lysine per innoculated test, while our new medium gives a continuous increase of acid production up to 120μg. Thus, the range in which the amino acid can be estimated in much extended.Parallel analysis was made on 25 food samples with our new medium as well as those published in the literature. In 11 cases, the agreement was within 10%; in 13 cases, the results obtained with' our new medium were about 10% higher; and in only 1 case, the new medium gave a lower result. These differences are not due to routine analytical error as repeated estimation gave similar results.

    本文介绍微生物法测定赖氨酸所用的一种经济培养基。其大部分氨基酸系由玉米胶蛋白水解物供给。补充的氨基酸为精氨酸、甘氨酸、色氨酸、胱氨酸和丝氨酸。 实验结果证明,用玉米胶蛋白作培养基,以测定食物中赖氨酸的含量时,可获得较稳定的结果和满意的收回率。用本培养基测定一般食物中赖氨酸的含量与用其他培养基测定的结果符合,故本培养基可以用于食物中赖氨酸的测定。

     
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