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resonance     
相关语句
  共振
     A Study on the New Methods for the Determination of Heparin and Some Physicochemical Parameters by Resonance Rayleigh Scattering and Resonance Nonlinear Scattering
     共振瑞利散射及共振非线性散射测定肝素和某些物理化学参数的新方法研究
短句来源
     A Theoretical Study for the Rotation Excitation Cross Section of the Diatomic Molecules with Atoms and the Resonance Structure in the Photoionization of the Ion Ca~+
     原子与双原子分子碰撞转动激发截面和Ca~+离子光电离过程及其共振结构的理论研究
短句来源
     The Study on Giant Resonance Properties of Nucleus in a Relativistic Approach
     核巨共振性质的相对论研究
短句来源
     Study on Stochastic Resonance and Sensory Information Processing Using Model and Experiment
     随机共振与感觉信息处理的理论和实验研究
短句来源
     Study on Application of Stochastic Resonance Theory on Faint Signal Detection
     随机共振理论在弱信号检测中的应用研究
短句来源
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  谐振
     Study of Generalized Resonance in Electromagnetic Scattering by Multiple Conductors
     多导体散射中的广义谐振研究
短句来源
     Research and Development of Surface Plasmon Resonance (SPR) Biochemical Analysis Instrument
     一种新型表面等离子体谐振(SPR)生化分析系统的研究
短句来源
     Study and Applications of Generalized Electromagnetic Resonance and Electromagnetic Bandgap (EBG) Local Resonance
     广义电磁谐振与EBG电磁局域谐振研究及应用
短句来源
     SLOT RESONANCE IN COUPLED WAVEGUIDES
     耦合波导中的槽谐振
短句来源
     Principle and method for measurement of distributed inductance of pulse capacitor by means of resonance method
     谐振法测量脉冲电容器分布电感的原理和方法
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  共鸣
     Resonance theorems for linear operators in M-PN spaces
     M-PN空间上线性算子的共鸣定理
短句来源
     Study on the nasal resonance
     鼻腔共鸣作用的初步研究
短句来源
     The Resonance Theorem and Operator Space in F~* Spaces
     F~*空间中的共鸣定理与算子空间
短句来源
     Resonance Theorem on a Famaily of α-Convex Functionals
     α凸性泛函簇的共鸣定理
短句来源
     The Spiritual Resonance of Civil Law and Harmonious Society
     民法与和谐社会的精神共鸣
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  共振的
     Ferromagnetic resonance study of (Li_(0.5)F_(0.5))_(0.7-y)Zn_(0.3)Co_yFe_2O_4 ferrites system
     (Li_(0.5)F_(0.5))_(0.7-y)Zn_(0.3)Co_yFe_2O_4铁氧体铁磁共振的研究
短句来源
     Theoretical Study on Stochastic Resonance \=in Pt(100)/NO+CO System
     Pt(100)/NO+CO体系随机共振的理论研究
短句来源
     Experimental Research on The 4S-6S Two-Photon Resonance of Atomic Potassium
     钾原子4S-6S双光子共振的实验研究
短句来源
     With electron paramagnetic resonance(EPR)technique,this paper studied the free radicals generation and oxidative stress in Carassius auratus liver after 4,8,12,24 and 72 hours of 2,4,6-trichlorophenol(2,4,6-TCP)intraperitoneal injection.
     采用电子顺磁共振的方法,研究了鲫鱼腹腔注射2,4,6-三氯苯酚(2,4,6-TCP)不同时间(4、8、12、24、72h)后其肝脏自由基强度的变化、氧化应激反应及其损伤机理.
短句来源
     According to new data on electromagnetic structure of nucleon, we c' oose the parameters of I=I=1 resonance of π-π interaction to be tr = 22, av = 1.52, bv = 1.60, and calculate and angular distributions at three energies.
     按照核子电磁结构的新数据,我们选取π-π作用的I=J=l共振的参数为t_r=22,α_v=1.52,b_v=1.60,计算了dσ/dΩ(90°),dσ_‖/dσ_⊥(90°)以及三个能量下的角分布。
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      resonance
    The 2D QSAR studies revealed that the activity is mainly influenced by electronic parameters where the contribution of field effect and Hammet constant is positive while that of resonance is negaitive.
          
    The stereo-structures of Roridin P and Isororidin P were established on the basis of one- and two-dimensional nuclear magnetic resonance (NMR) spectral analyses.
          
    The synthesized compounds have been characterized on the basis of elemental analyses, infrared spectroscopy (IR), and nuclear magnetic resonance (NMR).
          
    Two compounds were designed, synthesized, and characterized by 1H-nuclear magnetic resonance (1H-NMR), ultraviolet (UV)-visible, and matrix-assisted laser desorption/ionization (MALDI) mass spectra.
          
    Attractor for weakly damped driven long wave-short wave resonance equation
          
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    By surrounding a photo-neutron source of Ra+Ee with a thin spherical sbell of paraffin, a continuous spectrum of scattered neutrons, extending from zero energy to the energies of the primary neutrons is obtained. When a silver detector is exposed to such a spectrum, a part of the neutrons having just the energies at resonance with the silver nuclei is strongly absorbed by the detector and thereby produces the induced β-activity. By measuring the activity of silver and the apparent absorption coefficient...

    By surrounding a photo-neutron source of Ra+Ee with a thin spherical sbell of paraffin, a continuous spectrum of scattered neutrons, extending from zero energy to the energies of the primary neutrons is obtained. When a silver detector is exposed to such a spectrum, a part of the neutrons having just the energies at resonance with the silver nuclei is strongly absorbed by the detector and thereby produces the induced β-activity. By measuring the activity of silver and the apparent absorption coefficient of the resonance neutrons in a thin silver absorber, the total width of the resonance levels effective to neutron capture and located in the above spectrum is estimated. Let τ He the average value of one half of the half-value width of the resonance levels, expressed in volts, and n be the number of resonance levels here concerned. We find nτ=260 volts for the silver nuclei of half period 22" if the energies of the primary neutrons are taken to be 2x 105 volts. Knowing nτ, we can evaluate the average spacing between adjacent resonance levels effective to neutron capture by giving a plausible value to τ. We find a spacing of the order 80-800 volts if τ be given the value 0.1-1.0 volt. This result is in good accord with the recent theoretical calculation of Bethe and also with observations of resonance groups in the low energy region.

    把‘镭—铍’所产生的‘光中子’,穿过一层半厘米厚的白蜡,我们便得到一‘连续的中子谱’。他们中间有些中子,能和银的原子核起‘共振作用’,因此可以被银片吸收,而产生‘人工放射银’先测量人工放射的强度和‘共振中子’在银片中的吸收率,再应用原子核内共振能层的宽度,我们便可以求出银的原子核内‘共振能层’的密度大约共振能在零和二十万伏特中间,平均每隔一二百伏特便有一可以吸收质子的共振能层,和理论很相符合。

    The average nuclear level spacings of In, Ir and Au are estimated from the beta-ray activities induced by the primary photo-neutrons emitted from a Ra+Be source. A Geiger-Muller counter made of aluminum is used for measuring the induced activities. The saturated induced activities for the three elements are found to be 0.665±0.23 0.982±.03l, 0.453±0.21 (no./sec.) respectively. The estimation for the average nuclear level spacings is made in accordance with Breit-Wigner's one level formula, the resnlts being...

    The average nuclear level spacings of In, Ir and Au are estimated from the beta-ray activities induced by the primary photo-neutrons emitted from a Ra+Be source. A Geiger-Muller counter made of aluminum is used for measuring the induced activities. The saturated induced activities for the three elements are found to be 0.665±0.23 0.982±.03l, 0.453±0.21 (no./sec.) respectively. The estimation for the average nuclear level spacings is made in accordance with Breit-Wigner's one level formula, the resnlts being 5.6, 15 and 6 volts for In, Ir, Au respectively. The spacing of Ir is probably somewhat over estimated since the values of the energy and absorption coefficient of the resonance neutron group, used in the estimation, are not very accurate.

    作者用镭加钡之光感中子以射击铟铱金三元素,而以一铝质盖密计(GeigerMuller counter)测其感应放射能。得各元素感应放射能之饱值,铟为0.665士.023.铱为0.982±.031,金为0.453±.024.依白威二氏(Breit-Wigner)之单能准式,吾人可自感应放射能之值道出原子核能准之平均间隔。所得结果,铟铱金各为5.6,15,6伏特。因计算时所用共振中子之能及吸收系数不太准确,估计所得铱之间隔大概过高。

    This paper reviews the observational facts and theories on the airflow over small mountains. Special emphasis is laid to point out and discuss the controversies in the theory of lee waves among different writers. According to present author controversiesare due to (1) the difference in scale of the mountain and (2) the choice of the upper boundary condition. When l is comparable to the critical value , where l is the half-width of the mountain, lee waves occur. When there is an upper solid lid or a discontinuity...

    This paper reviews the observational facts and theories on the airflow over small mountains. Special emphasis is laid to point out and discuss the controversies in the theory of lee waves among different writers. According to present author controversiesare due to (1) the difference in scale of the mountain and (2) the choice of the upper boundary condition. When l is comparable to the critical value , where l is the half-width of the mountain, lee waves occur. When there is an upper solid lid or a discontinuity in the atmosphere lee waves occur.In the first case the forced vibration is in resonance with natural vibration. In the second case there can exist only vibrations of certain wave lengths, which appears as those of the lee wave. The physics of lee waves is thus clear.

    本文总结了小地形对于气流的影响。文中着重地指出和讨论了过去背风波理论中的矛盾。作者认为这些矛盾是由于山的大小选择和上界边界条件的选择而引起的。当山的宽度的一半l≈(L_S/2π)时(L_S=u/(g/θ αθ/αz)(1/2)),和当大气中有一个固定的盖或不连续面存在时,背风波出现。 在第一种情况下,山的强迫振动与大气中的自由振动共鸣;在第二种情况下,只具有某些滤长的振动可以存在,这波长就是背风波的波长。这样的讨论背风波的物理意义就清楚了。

     
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