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核能     
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  nuclear energy
     NUCLEAR ENERGY AND A. EINSTEIN--HOW TO INTERPRET A. EINSTEIN'S FORECAST E = mc~2
     爱因斯坦与核能——解读A.Einstein伟大的预见E=mc~2
短句来源
     Generation Ⅳ nuclear energy systems and hydrogen economy——New progress in the energy field in the 21~(st) century
     第四代核能和氢气经济——21世纪能源领域的新进展
短句来源
     NUCLEAR ENERGY DEVELOPMENT AND NUCLEAR WASTE MANAGEMENT
     核能发展与核废物管理
短句来源
     Tactics and targets for nuclear energy development in China by 2020
     2020年前我国核能发展的策略和目标研究
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     NUCLEAR ENERGY UTILIZATION AND ENVIRONMENT PROTECTION
     核能利用与环境保护
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  nuclear power
     An RFQ, which will be operated at 352 MHz frequency and 6% duty factor and will accelerate 50 mA proton beam from 80 keV to 5 MeV, has been proposed as an injector of the verification facility of Accelerator Driven System (ADS) for Radioactive Clear Nuclear Power System in China.
     一台出口能量5 MeV质子RFQ将作为中国洁净核能系统ADS(Accelerator Driven System)验证装置的注入器,其工作频率352 MHz,注入能量80 keV,流强50 mA。
短句来源
     Nuclear Power Development Strategy through 2020 in China (In Chinese)
     2020年中国核能发展战略研究
短句来源
     Conceptual Study of High Power Proton Linac for Accelerator Driven Subcritical Nuclear Power System*
     加速器驱动次临界核能系统高功率质子直线加速器概念研究(英文)
短句来源
     Approaoh on Nuclear Power Utilization and Energy Sustainable Development in China
     我国核能利用与能源可持续发展探讨
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     Development of Nuclear Power Policy and Referring Research of Japan
     日本核能政策的发展及借鉴分析
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  driven energy
     In the normal conductive project of high beam in density proton linac in accelerator driven energy system, the high energy section uses side coupled cavity linac(CCL)structure,its frequency is 700 MHz, and operates on π/2 mode.
     洁净核能系统的强流连续波质子直线加速器常温腔方案中 ,高能段采用边耦合加速结构(CCL) ,频率为 70 0MHz ,工作模式为π/2模。
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  “核能”译为未确定词的双语例句
     MSDI and Nuclesr Spectra of ~(15)N-~(15)O
     修正表面δ相互作用(MSDI)与~(15)N——~(15)O核能
短句来源
     Exciting Level Energy of Nuclear ~6Li and ~7Li In Reactions of Stripping and Capturing
     核子削裂与拾取反应中~6Li 和 ~7Li 核能级的激发
短句来源
     The examples of ̄(197)Tl εdecay and ̄(61)Mn β ̄- decay are given for illustrating their performance.
     以 ̄(197)Tlε衰变和 ̄(61)Mnβ ̄-衰变的核能级纲图为例,说明其性能。
短句来源
     Results RAW264. 7 cells show TRAP-negative with monocyte or 2 nucleus, expressing osteoclast phenotypic and functional genes without capability of absorbing bone tissue.
     结果 RAW264.7细胞TRAP染色阴性,单核或2个核,能表达破骨细胞表型和功能基因,无骨吸收功能。
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     A HR-200 NUCLEAR DESALINATION SYSTEM
     HR-200核能海水淡化系统
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  nuclear energy
Strategic position and development prospects of nuclear energy in China
      
PWR-FBR with closed fuel cycle for a sustainable nuclear energy supply in China
      
From the thermal reactor to the fast reactor and then to the fusion reactor; this is the three-step strategy that has been decided for a sustainable nuclear energy supply in China.
      
Today, in view of a sustainable nuclear energy production, development of advanced reactors re-proposes the choice of innovative fuel cycle concepts, in a context of greater expectations and more stringent requirements.
      
Such systems are used in satellite communications, nuclear energy, and defense electronics.
      
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  nuclear power
By analyzing the challenges of China's energy supply, an excellent perspective of nuclear power development in the country has been described.
      
Taking into account the near-, mid-, and long-term development requirements, a comprehensive, coordinated and sustainable nuclear power program is proposed.
      
China's ambitious nuclear power program motivates the country's nuclear community to develop advanced reactor concepts beyond generation III to ensure a long-term, stable, and sustainable development of nuclear power.
      
Based on the suggested selection criteria, two new types of water-cooled reactors are recommended for future Chinese nuclear power generation.
      
Experience from design and application of the top-level system of the process control system of nuclear power-plant
      
更多          
  driven energy
The low activities of enzymes diagnostic for CO2 fixation (Calvin cycle) and for sulfur-driven energy generation, as measured by other investigators, have been attributed to bacterial contamination of the gill surface.
      
The goal is unsubsidized renewable energy available at reasonable cost in a market-driven energy environment.
      


Taking account of mixing of states within the subshells 2S_(1/2) and 1d_(3/2),we have systematically calculated the spectra of nuclei with A=30,31 and 32 acording to Talmi's method.The calculated results are in good agreement with the experimental data.There are,howeoer,a few lowlying levels which cannot be interpreted in this scheme.It seems that some of them may be due to exci- tation of nucleons from the 1d_(5/2) subshell.

本文应用多粒子壳模型的 Talmi 方法,系统地计算了 A=30,31,32的核能谱。计算限于由2S_(1/2)和1d(3/2)壳层产生的情态,顾虑了它们之间可能的全部组态混合,采取 j-j 耦合表象,并假定同位旋是好量子数,定出了2S_(1/2)和1d_(3/2)壳层的二体核力和库伦力矩阵元,利用这些矩阵元,计算了 S_i~(30),S_i~(31),P~(30),P~(31),S~(31),S~(32)原子核的由2S_(1/2)和1d_(3/2)壳层产生的全部能谱,计算结果与实验符合甚好,少数没有得到解释的低位置实验能级,有些可能在顾虑到1d_(5/2)壳层核子的激发后得到解释.

The angular distribution and differential cross-section of the proton groups from the C12(d, p)C13 and Ca40(d, p)Ca41 ground state reactions have been measured at the deu-teron energy of 13.3 MeV. Measurements were made at 2.5° or 5° intervals and covered the angular range from 3° to 167° and from 10° to 164° for the C12 and Ca40 reactions respectively. It is found that: (1) The experimental points near the main stripping peak agree fairly well with the theoretical angular distribution curve calculated by using...

The angular distribution and differential cross-section of the proton groups from the C12(d, p)C13 and Ca40(d, p)Ca41 ground state reactions have been measured at the deu-teron energy of 13.3 MeV. Measurements were made at 2.5° or 5° intervals and covered the angular range from 3° to 167° and from 10° to 164° for the C12 and Ca40 reactions respectively. It is found that: (1) The experimental points near the main stripping peak agree fairly well with the theoretical angular distribution curve calculated by using the simple Butler theory and normalized at the stripping peak, for both proton groups. The parameters of the nuclear levels thus determined are in good accord with the results previously obtained. (2) For large angles, the experimental cross-sections do not decrease to such small values as required by the Butler theory. They also show very prominent subsidiary maxima at the positions not in accord with the prediction of the Butler theory. These features can be interpreted by the distorted wave theory, but may also be partly due to contributions of reaction mechanisms other than the deuteron stripping. (3) In the C12(d, p)C13 reaction, the cross-section decreases strongly at the forward angle and shows an uprising at the backward angle. Neither of these features is in accord with the Butler theory, but they can also be explained by the distorted wave theory. The uprising at the backward angle may also be due to contributions of other reaction mechanisms. (4) The reduced widths of the ground levels for the C12(d, p)C13 and Ca40(d, p)Ca41 reactions, obtained from the peak cross-sections by using the Butler theory are γ2 = 0-17 and 0.041 respectively. The distorted wave theory gives larger values which will be closer to the values expected from the single particle model. Owing to these facts, it seems worthwhile to analyze the data of the present experiment with the detailed distorted wave theory.

本实验测量了C~(12)(d,p)C~(13)及Ca~(40)(d,p)Ca~(41)基态反应质子群的角分布和微分截面。氘核能量为13.3MeV,对C~(12)和Ca~(40)的反应,其测量角度范围分别为3°—167°和10°—164°,每隔2.5°或5°测量一点,其主要结果如下:(1)对于这两群质子,在主削裂峯附近的实验点和用简单Butler理论算得的理论角分布曲线都符合得相当好;理论计算数据对实验数据在主峯处归一;由此而定得的核能级参数与前人所得到的是一致的。(2)大角度区的实验截面数值没有减小到象Butler理论所要求的那样小,并有非常明显的次极大出现,其位置与Butler理论所预言的不一致;这些特点可以用扭曲波理论来解释,非氘核削裂机制也可能有部分贡献。(3)在C~(12)(d,p)C~(13)反应中,前角度区的截面有很大下降,而后角区则有明显的增加,这些现象都和Butler理论不一致;然而,这也可以用扭曲波来解释。(4)用主峯处的截面和Butler理论算得的基态的约化宽度,对C~(12)(d,p)C~(13)和Ca~(40)(d,p)Ca~(41)反应分别为r~2=0.17和...

本实验测量了C~(12)(d,p)C~(13)及Ca~(40)(d,p)Ca~(41)基态反应质子群的角分布和微分截面。氘核能量为13.3MeV,对C~(12)和Ca~(40)的反应,其测量角度范围分别为3°—167°和10°—164°,每隔2.5°或5°测量一点,其主要结果如下:(1)对于这两群质子,在主削裂峯附近的实验点和用简单Butler理论算得的理论角分布曲线都符合得相当好;理论计算数据对实验数据在主峯处归一;由此而定得的核能级参数与前人所得到的是一致的。(2)大角度区的实验截面数值没有减小到象Butler理论所要求的那样小,并有非常明显的次极大出现,其位置与Butler理论所预言的不一致;这些特点可以用扭曲波理论来解释,非氘核削裂机制也可能有部分贡献。(3)在C~(12)(d,p)C~(13)反应中,前角度区的截面有很大下降,而后角区则有明显的增加,这些现象都和Butler理论不一致;然而,这也可以用扭曲波来解释。(4)用主峯处的截面和Butler理论算得的基态的约化宽度,对C~(12)(d,p)C~(13)和Ca~(40)(d,p)Ca~(41)反应分别为r~2=0.17和0.041;用扭曲波理论计算时,则得到较大的r~2值,后者更接近于单粒子模型所预言的数值,基于上面这些事实,对本实验的数据使用扭曲波理论来进行分析似乎是值得的。

The polarization of protons emitted at six angles from the C12 (d, p) C13 and Ca40 (d, p)Ca41 ground state reactions has been measured. For the C12 reaction, the data at small angles are very close to the results of previous works, and in agreement with the

本实验测量了C~(12)(d,p)C~(13)和Ca~(40)(d,p)Ca~(41)两个基态反应质子群在六个角度上的极化值。在C~(12)的反应中,小角区的结果和前人的工作相近,和半经典符号规则j_n=l_n±1/2,P=(±)一致。θ_L=115°的数据是前人没有测量过的,我们得到P=0.529±0.068,在Ca~(40)的反应中,小角区数据的符号也和半经典符号规则一致,和Немeц及Boschitz的实验结果相同,而和Hird,Takeda及Bercaw的实验结果相反,看来这是由于入射能量不一样所致。因为在这些实验中,三个较高入射能量和三个较低入射能量的结果,都分别有一致的符号,把已发表的极化实验数据进行比较,可以看出,半经典符号规则还是有一定的参考价值,或者,可能找出一个修改后的符号规律,以供核能谱学应用。在有些情况下,我们看到,随着氘核能量的增加,极化角分布的图形似乎有向小角区移动的趋势,这可能是直接反应的一个特性。关于截面和极化角分布间的位置对应关系,我们认为,截面角分布的极小,除了可对应于极化的变号以外,还可能对应于极化绝对值的极大,截面角分布的极大也可能对应于极化的变...

本实验测量了C~(12)(d,p)C~(13)和Ca~(40)(d,p)Ca~(41)两个基态反应质子群在六个角度上的极化值。在C~(12)的反应中,小角区的结果和前人的工作相近,和半经典符号规则j_n=l_n±1/2,P=(±)一致。θ_L=115°的数据是前人没有测量过的,我们得到P=0.529±0.068,在Ca~(40)的反应中,小角区数据的符号也和半经典符号规则一致,和Немeц及Boschitz的实验结果相同,而和Hird,Takeda及Bercaw的实验结果相反,看来这是由于入射能量不一样所致。因为在这些实验中,三个较高入射能量和三个较低入射能量的结果,都分别有一致的符号,把已发表的极化实验数据进行比较,可以看出,半经典符号规则还是有一定的参考价值,或者,可能找出一个修改后的符号规律,以供核能谱学应用。在有些情况下,我们看到,随着氘核能量的增加,极化角分布的图形似乎有向小角区移动的趋势,这可能是直接反应的一个特性。关于截面和极化角分布间的位置对应关系,我们认为,截面角分布的极小,除了可对应于极化的变号以外,还可能对应于极化绝对值的极大,截面角分布的极大也可能对应于极化的变号,对于这些现象,我们用粗糙的扭曲波理论进行了讨论。

 
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