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the cross section
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  截面
     The Cross Section Measurements for the ~(100)Mo(n,2n) ~(99)Mo,~(96)Mo(n,p)~(96)Nb and ~(92)Mo(n,α) ~(89m+g)Zr Reactions
     ~(100)Mo(n,2n)~(99)Mo,~(96)Mo(n,p)~(96)Nb和~(92)Mo(n,α)~(89m+g)Zr反应截面测量
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     The Cross Section Measurements for the 51 V(n,α) 48 Sc and 51 V(n,p) 51 Ti Reactions
     ~(51)V(n,α)~(48)Sc和~(51)V(n,p)~(51_Ti反应截面测量
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     The cross section for the fine-structure-changing collision [i.e,Cs(7P_ 1/2 )+Cs(6S)Cs(7P_ 3/2 )+Cs(6S)]is 3.5×10 -14 cm 2.
     精细结构碰撞转移 [即过程Cs(7P1 2 ) +Cs(6S)Cs(7P3 2 ) +Cs(6S) ]截面为 3 .5× 10 - 1 4cm2 。
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     Analysis of the Cross Section for ~(182)W(n,n′α) ~(178)Hf~(m2) Reaction
     ~(182)W(n,n′α)~(178)Hf~(m2)反应截面研究
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     The cross section of DSB induction with 30Gy/min is 2.14m 2, which is more than three times of that with 3Gy/min.
     30Gy/min辐照诱导DSB的截面为 2 .14μm2 ,是 3Gy/min的 3.1倍。
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  产生截面
     From the observed top candidate events, the top mass is derived to be 174±10_(-12)~(+13) GeV/c2,the cross section of top production is 13. 9_(-4.8)~(+6.1) Pb.
     给出顶夸克的质量为174±10_(-12)~(+13)GeV/c~2,产生截面为13.9_(-4.8)~(+6.) Pb
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     ,the cross section of J/ψ in γ+p→p+J/ψ+X process is calculated and discussed with the s =200GeV,4GeV< p T<10GeV. Our results show that the NRQCD matrix elements had a great influence on cross sections,but a little influence on the ratio of diffractive cross section to inclusive cross section.
     Alvero等给出的三组Pomeron的部分子分布函数 ,在s =2 0 0GeV ,4GeV 产生截面 . 该截面的大小受NRQCD的长程矩阵元的影响很大 ,但该截面与单举截面的比值很少受这种影响 .
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     With peasonable values of the parameters in TC2 models,the cross section can reach 20fb.
     在TC2模型合理的参数空间内 ,其产生截面可达 2 0fb .
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     In most of the parameter space, the deviation of the total production cross section σ tot from its SM value is larger than 5%, which may be observable in the future high energy e +e - collider (LC) experiments. The future LC experiments could test the LH model by measuring the cross section of the process e +e -→ZH.
     在LH模型大部分参数空间内 ,过程e+ e-ZH的总产生截面σtot与标准模型 (SM)相应值的偏差大于 5 % ,应该能在未来的高能e+ e-对撞机 (LC)实验中观测到
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     We calcnlate the cross section of Axion Production in e~+ e~- annihilation, andsuggeste that one can search for Axion in the e~+e~- annihilation experiment using β~+Source.
     我们计算了在e~+e~-湮灭中轴子的产生截面,建议利用β~+放射源在e~+e~-湮灭实验中寻找轴子。
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  “the cross section”译为未确定词的双语例句
     The cross section of ~(89)Y(n,2n)~(88)Y reaction are 759±42,835±42,958±53 mb for neutron energy 13.5±0.3,14.1±0.2,14.6±0.3 MeV,respectively.
     由(13.5±0.3),(14.1±0.2),(14.6±0.3)MeV中子引起的89Y(n,2n)88Y反应截面值分别为(759±42),(835±42)和(958±53)mb。
短句来源
     The cross section area of myelinated nerve fiber in BL group was significantly higher than that in CL group[(2.83±0.38,2.04 ±0.24) cm2 (q=3.147, P < 0.05)].
     BL组有髓神经纤维截面积明显高于CL组[(2.83±0.38,2.04±0.24)cm2(q=3.147,P<0.05)].
短句来源
     THE CROSS SECTION MEASUREMENTS FOR THE ~(179)Hf(n, 2n) ~(178)Hfm~2 and ~(209)Bi (n, 2n) ~(208)Bi REACTIONS
     ~(179)Hf(n,2n)~(178)Hf~(m2)和~(209)Bi(n,2n)~(208)Bi反应截面的测量
短句来源
     The Cross Section Measurement for the Reactions of ~(48,46)Ti(n,p) ~(48,46)Sc ~(50)Ti(n,α) ~(47)Ca and ~(58)Ni (n, 2n) ~(57)Ni ~(58)Ni (n, p) ~(58m+g)Co
     ~(50,48,46)Ti的(n,p)(n,α)和~(58)Ni的(n,2n)(n,p)反应截面的测量
短句来源
     Results The cross section areas (cm ) of MPV of the two groups decreased postoperatively ( study group 1. 80 ± 0. 69 vs. 1. 20 ± 0. 73 , t = 13.96, P = 0. 00; control group 1. 78 ± 0. 43 vs. 1. 29 ± 0. 57, t = 11. 38, P = 0. 00).
     结果术后两组MPV的管腔横截面积比术前明显减少[研究组(1.20±0.73)比(1.80±0.69),t=13.96,P=0.00;对照组 (1.29±0.57)比(1.78±0.43),t=11.38,P=0.00]。
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  the cross section
On the whole, three-dimensional and nondiagonal character of the tensors of excess surface stresses determined by the integration over the volume and the cross section of the surface layer is retained at any selection of the dividing surface.
      
It was found that the hydrophobization of the inner surface of a tube offers the stabilization of films of nonfoaming aqueous solutions closing the cross section of the tube.
      
The process of bubble separation of substances using large gas bubbles totally closing the cross section of the column was investigated.
      
The relationships obtained are used for numerical calculations of the velocity distribution and the distribution of the induced magnetic field over the cross section for several modes of flow.
      
The channel is formed by two long electrodes, and the cross section of the channel varies slightly and periodically along the gas flow.
      
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In a previous paper,(1) a method for solving composite beams jointed by bolts by means of equivalent continous beams is suggested. This result is based on the following assumptions: 1. All beams composing the composite beam have the same deflec non at the point where bolt is used. 2. The actions of bolts are considered as concentrated forces applied on the beams at the points where bolts are used. 8. The effect of torsion caused by the external load which is not ap plied at the shear center of the whole cross-section...

In a previous paper,(1) a method for solving composite beams jointed by bolts by means of equivalent continous beams is suggested. This result is based on the following assumptions: 1. All beams composing the composite beam have the same deflec non at the point where bolt is used. 2. The actions of bolts are considered as concentrated forces applied on the beams at the points where bolts are used. 8. The effect of torsion caused by the external load which is not ap plied at the shear center of the whole cross-section of the composite beam is neglected. 4. The friction between the beams is neglected. 5. The weakening of the cross sections of the beams due to the bolt holes is neglected. In order to examine the correctness of these assumptions the results of a group of tests are given. The results of tests show that all assumptions except the third are well agree with the practical condition. As to the third assumption, the problem will be further studied.

作者曾在前文(1)中提供一种应用相当连续樑来解决螺栓连结的组合樑的简便方法。 此结果基于下列诸假设(除弯曲基本假设以外)。 1.组成组合樑之各樑在螺栓处有相同之挠曲。 2.螺栓的作用视为施加在各樑上螺栓处之集中力。 3.由于外加载荷未作用在组合樑整个截面之弯曲中心而引起之扭转影响略去不 计。 4.诸樑间之摩擦力略去不计。 5.诸樑由于螺栓孔而引起之截面削弱略去不计。  为了检查这些假设与实际问题符合之情况,作者进行了一系列实验。 实验结果指出除了第三假设外所有假设均与实际情况很好符合,关于第三假设的问题尚待进一步研究。

Two sympodic fetuses (sympus dipus) of 7-8 months present very similarabnormalities. The lower extremities are fused along their posterolateral borders.Many muscles are missing or anomalous on their posterior aspects and in thesoles. The perineum is completely obliterated. The caudal parts of the digestiveand urogenital systems are absent. Their lumbosacral cords have been studiedin serial sections in comparison with a normal series with the followingresults: The general features of the cross sections...

Two sympodic fetuses (sympus dipus) of 7-8 months present very similarabnormalities. The lower extremities are fused along their posterolateral borders.Many muscles are missing or anomalous on their posterior aspects and in thesoles. The perineum is completely obliterated. The caudal parts of the digestiveand urogenital systems are absent. Their lumbosacral cords have been studiedin serial sections in comparison with a normal series with the followingresults: The general features of the cross sections of the sympodic cords are erratic:The sections are smaller, compressed mediolaterally or ventrodorsally and theirtwo sides are not symmetrical. The central canal is shifted ventrally. The graymatter of the anterior horn spreads anteriorly while the white matter in thisregion becomes thinned off, but compensatively thickened in the adjacent parts. The constellation of the motor cell groups is anomalous: Apart from themedial group in the anterior horn, the lateral group is shifted ventrolaterally.The cell columns are smaller in cross section, poorly defined and scattered nearthe anterior white matter. They become abruptly attenuated from the middlepart of the series downward and soon leave the anterior horn a total blank. The number of motor cells in the anterior horn is decreased: The cellmagnitude of the lateral column in sympodic fetus 1 is estimated at 72.1% ofthe normal. In sympodic fetus 2 it falls to 27.5%. The percentage values of themedial cell columns in sympodic fetuses 1 and 2 dwindle to 55.4% and 28.7%respectively. Taking together the two columns, the percentages of the motorcells in sympodic fetuses 1 and 2 are reduced to 71.0 and 27.6 respectively. The reduction and anomaly of the muscles are concentrated in the caudalsegments of the sympodic body,--the pelvis and perineum in particular. Themotor cells in the anterior horn of the lumbosacral cord show a commensuratedecrement, especially at the caudalmost levels. The degree of development ofthe myotomes is correlated with the magnitude of their central motor cells.

胎龄7—8月的二个单腿胎儿(双足单腿畸胎)表现近似的畸变。左右下肢愈合,後侧和足心的肌肉多有歉缺。会阴部完全无有。消化、生殖和泌尿器的下端全不存在。二胎的脊髓腰骶部经切片观察,与常胎比较,发现以下的事实。脊髓的切面形相乖异:切面减小;左右或前後扁窄;左右不复对称;中央管偏居前方;前角的灰质拓向前侧;此部的白质显著减薄,但在它处却相当加厚。前角的细胞群簇配布失常:除内侧群外,外侧各群拓前前方。各核团切面单薄,界限不清,贴白质星散配布。到了腰膨大的中部,核因形体骤减,前角随即全成空白。前角的运动细胞数量大减:畸胎1的外侧柱的细胞分量约当常胎数值的72.1%;畸胎2低至27.5%。。在畸胎1和2,内侧柱的百分数值分别少到55.4和28.7。若合看内外二柱,它们的百分数值分别减至71.0和27.6。在单腿畸胎中,肌肉的歉缺多在下部的体节,特是骨盆和会阴。它们的脊髓骶部中,前角的细胞相应减少,特在尾端。身体肌节的发展程度与主管的中枢细胞的数量是相系的。

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are...

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions of the structure and development of five frequently observed rain-bearing systems i.e. cold front, blocking high and cold vortex, monsoon heat low, warm front and typhoon.The last part consists of discussions of some points of view in synoptic meteorology in China. It is stated that the monsoon precipitation is various in intensity and duration according the large-scale flow patterns. The difference of moisture content in the middle troposphere as a criterion for the identification of equatorial or tropical maritime air mass is proved to be missleading. It is shown that the upper air moist content is high only within the raining region near the polar or equatorial front. To the south of the equatorial front within the so-called equatorial air mass, the moist content in the middle troposphere is as low as within the tropical maritime air mass. It is the convergence and lifting of the tropical air mass which releases the convective instability and induces the surface moist air rising to the middle troposphere. The phenomenon of the forward-inclination of the so-called North-West Trough based on the time cross-section of wind is proved to be a mistake by combining two systems into one trough. The terminology of shear line, and the correct application of synoptic models in weather analysis and forecas-ting are also discussed.

本文是一年来从事夏季降水天气初步普查的简单报告。第一节首先指出所用分析方法与一般国内所通用者,稍有不同。高空等压面分析,取20米作为等高缐间隔,2℃作为等温缐间隔。代替40米及5℃的间隔,以适应夏半年较弱的温度场与气压形势场,在剖面分析中以等假相当位温缐代替位温缐,与等温缐配合以适应降水天气的凝结降水过程。 第二节讨论了五种夏半年基本降水天气系统,即冷锋、阻塞高压与冷涡、季风热低压、 暖锋及有风的结构,并简单地叙述了演变过程。 第三节对某些天气概念提供一些批判性的讨论。根据现已增加的观测材料,论证季风与梅雨是多样性的,决定于大规模的温度场与流场特性,以高空湿度大小区分赤道气团与热带海洋气团,证明是不适当的,因为中国赤道锋降水区域以南,即在所谓南南季风的赤道气团中,中层大气仍是干燥的。降水区域内,中层对流层的大量水份,是由于辐合或抬升的作用,使潜势的对流不稳定性成为现实的不稳定性,而由下层空气上升带上去的。文中还论证了所谓西北槽槽缐前倾是将两个系统混作—个系统的不正确桔果。最后还讨论了切交缐及一般模型在天气分析预报中的应用与限制。

 
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