助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   相关时间 在 物理学 分类中 的翻译结果: 查询用时:0.548秒
图标索引 在分类学科中查询
所有学科
物理学
化学
无线电电子学
数学
自动化技术
更多类别查询

图标索引 历史查询
 

相关时间
相关语句
  correlation time
    Saturation Effects on Intensity Correlation Time and Effective Eigenvalue of a Laser Field
    饱和效应对激光场强度相关时间和有效本征值的影响
短句来源
    DETERMINATION OF ROTATIONAL REORIENTATION CORRELATION TIME AND ~(59)Co NUCLEAR QUADRUPOLAR COUPLING CONSTANT OF POLYAMMONIUM MACROCYCLIC COBALTICYANIDE SUPERCOMPLEXES IN DILUTE AQUEOUS SOLUTIONS —— An Application of Dynamic Laser Light Scatteri
    聚氨大环氰基合钴超分子的转动相关时间及~(59)Co核四极耦合常数的测定——动态激光光散射的应用(英文)
短句来源
    Theeffective eigenvalue λeff and the intensity correlation time Tc of the system are derived for different noise correlation time T .
    对于不同的噪声关联时间τ,求出了系统的有效本征值λ_(eff)和强度相关时间T_c。
短句来源
    It is shown that the pump parameter and intensity noise correlation time are the major factors of the first-order-like transition.
    研究结果表明,抽运参量和噪声相关时间是激光系统出现一级相变类比的关键因素,角噪声相关时间对强度谱分布中的线宽影响较大。
短句来源
    The effective eigenvalue λ eff and the intensity correlation time T C of the system are derived for different noise correlation time τ.
    对于不同的噪声关联时间τ ,求出了系统的有效本征值λeff和强度相关时间Tc.
短句来源
更多       
  “相关时间”译为未确定词的双语例句
    An Analysis of the Time-Sequence of a “Hard Ball” Correlation
    “硬球”相关时间序列的频谱分析
短句来源
    It is shown that the increase of noisecorrelation time can reduce the fluctuation in the system near threshold when the noise coupling coefficient λ is positive.
    结果表明,当噪声之间的耦合系数λ大于零时,噪声相关时间τ的增加可抑制系统在阈值附近的涨落;
短句来源
    When the coupling λ is negative, the increase of noise sorrelation time r can enhance the fluctuation near threshold.
    而当噪声之间的耦合系数λ小于零时,噪声相关时间τ的增加则加强系统在阈值附近的涨落。
短句来源
    Secondly, combining the unified colored noise approximation and the functional analysis, the steady state distribution function is derived when both multiplicative colored noise and additive white noise are included in a bistable system with colored coupling between two kinds of noise.
    当双稳系统中包含有一个微弱的周期性信号,而乘性噪声和加性噪声都是白噪声,只有两种噪声之间的祸合为色噪声时,我们研究了系统的噪声对随机共振的影响。 研究结果表明,系统的信噪比不仅受到两种噪声之间的祸合系数兄的影响,而且受到噪声相关时间公的影响,即噪声有色性的影响。
短句来源
    When there is a weak periodic signal is included in a bistable system, the effects of noise on the stochastic resonance in the system is investigated if both multiplicative and additive noise are white noise while the coupling between the two noise terms is colored noise.
    当双稳系统中包含有一个微弱的周期性信号,乘性噪声是色噪声,加性噪声是白噪声,而两种噪声之间的祸合也为色噪声并具有不同的噪声相关时间:、和::时,我们研究了两种不同种类的色噪声对随机共振的影响。
短句来源
更多       
查询“相关时间”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  correlation time
Correlation functions of gas-dynamic parameters at the pipeline boundary are studied and the corresponding characteristics (correlation time, delay time, etc.) are determined from the model for different initial and boundary conditions.
      
A share of membrane-bound spin probe was different for chloroplasts and subchloroplast fragments, as well as its rotational correlation time and apparent enthalpy and entropy activation of nitroxide rotational motion.
      
However, the rotational correlation time τ for spin-labeled Bs and its complex with Bn in solution corresponded precisely to their molecular weights.
      
It is likely the spin correlation time of the triplet states is longer than the lifetime of the complexes.
      
Basic parameters of the correlation (time, distance, relaxation time) are calculated from experimental data.
      
更多          


The ~(13)CNMR relaxation of polystyrene and its block copolymers in solution has been investigated. Relaxation parameters T_1 and NOE were determined and the variation of apparent T_2 with temperature was observed from the plots of linewidths versus temperatures. a log x~2 distribution function representing the spectra of correlation time has been used to simulate the relaxation parameters at various temperatres. Experimental results proved that there were multiple transitions in the molecular motion of polystyrene...

The ~(13)CNMR relaxation of polystyrene and its block copolymers in solution has been investigated. Relaxation parameters T_1 and NOE were determined and the variation of apparent T_2 with temperature was observed from the plots of linewidths versus temperatures. a log x~2 distribution function representing the spectra of correlation time has been used to simulate the relaxation parameters at various temperatres. Experimental results proved that there were multiple transitions in the molecular motion of polystyrene and its block copolymers. The relaxation parameters at various temperatures wcre closely related to molecular structure. For CH carbon on polystyrene there were two transitions on T_1—T and H1/2—T curve, corresponding to the rotation of the phenyl group and the main chain segmental motion. There also existed the relationship that the transition temteratures of homopolymer were greater than that of the block copolymers. Therefore, ~(13)C NMR relaxation parameters can also be used in the characterization of block copolymers.

本文研究了聚苯乙烯及苯乙烯-二甲基硅氧烷嵌段共聚物在溶液中的~(13)C NMR弛豫,测定了弛豫参数T_1,NOEF;并从线宽(△H1/2)观察了表观T_2的变化。用x~2分布函数的相关时间谱对弛豫参数进行了拟合。结果证明聚苯乙烯及其共聚物均存在多重运动单元,其弛豫参数随温度的变化与分子运动及分子结构密切相关,在CH碳的T_1~T及△H1/2~T的曲线上都观察到两个转变温度,相应于苯环的转动及主链的链段运动,且转变温度有均聚物大于嵌段共聚物的关系。因此,~(13)CNMR弛豫参数还可用于嵌段共聚物的结构表征。

The influence of the nonlinear OU weak colored noise on the nonequilibrium transitions is investigated by making use of the method that Altares and Nicolis are used for analysing linear OU solutions to the bivarite Fokker-Planck-Equation ( FPE). We obtain the expression of the stationary probability density and of the shift of the most probable value induced by colored noise. As for some models concerned, the white noise limit is also discussed. Finally, we compare our results with those obtained by San Miguel...

The influence of the nonlinear OU weak colored noise on the nonequilibrium transitions is investigated by making use of the method that Altares and Nicolis are used for analysing linear OU solutions to the bivarite Fokker-Planck-Equation ( FPE). We obtain the expression of the stationary probability density and of the shift of the most probable value induced by colored noise. As for some models concerned, the white noise limit is also discussed. Finally, we compare our results with those obtained by San Miguel and Sancho or Altares and Nicolis.

本文利用Altares和Nicolis分析线性OU色噪声的方法,从二维FPE出发,利用WKB法详细分析了非线性OU色噪声在其噪声强度足够小时对非平衡相变行为的影响,得到了定态几率密度和噪声诱导定态分支点漂移的最可几表达式。此外对于具体模型,讨论了噪声相关时间趋于零时的白噪声极限情况,并将有关结果与San Miguel和Sancho及Altares和Nicolis的结果进行了比较。

Spin diffuson is of great significance to many phenomena in solid state NMR. There have been several theoretical schemes for evaluating the diffusion coefficient. In fact, however, this kind of evaluation is not only unpractical but also unreliable. This paper presents a new scheme for determining spin diffusion rate by using the depolarization of the rare spins in CP MAS NMR, where the magnetization of rigid protonated rare spins dccays in two-stages, and the slow second stage which is a single -exponential...

Spin diffuson is of great significance to many phenomena in solid state NMR. There have been several theoretical schemes for evaluating the diffusion coefficient. In fact, however, this kind of evaluation is not only unpractical but also unreliable. This paper presents a new scheme for determining spin diffusion rate by using the depolarization of the rare spins in CP MAS NMR, where the magnetization of rigid protonated rare spins dccays in two-stages, and the slow second stage which is a single -exponential process offers a direct measurement of spin diffusion rate. Spin diffusion is actually a macroscopic manifestation of polarization transfer via flip-flop of successive pairs of spins, which can be reasonably described by a one-dimensional random walk model. The average flip-flop time can be deduced from the slope of the semilogarithm curve of depolarization, and the spin diffusion coefficient can thus be estimated. In some typical rigid organic solids and crystallized polymers, the average flip -flop time is found to be about 700s, which is of an order of magnitude longer than the dipolar correlation time. It means that the spin diffusion time constant is quite different from the spin-spin relaxation time constant, although the two processes are closely related. Consequently, the estimation of spin diffusion coefficient from proton line width is quite questionable

自旋扩散在固体核磁共振的许多现象中都起着非常重要的作用。现有几种理论方案以估算扩散系数。然而在实践中这种估算既不实际也不可靠。本文提出了确定自旋扩散速率的新方案,它利用的是CP MAS NMR中的稀核退极化规律。带质子的稀核磁化矢量在退极化中表现出两个阶段,慢衰减的第二阶段是单一指数过程,它提供了自旋扩散速率的直接度量。自旋扩散实质上是极化转移的一种宏观表现形式,这种转移通过一系列成对自旋的flip-flop进行,可以用一维随机走步模型描述。从退磁过程半对数曲线的斜率可以求得平均flip-flop时间。自旋扩散系数可以由此估算。在一些典型的刚性有机固体和结晶高分子聚合物中,求得平均flip-flop的时间是700微秒左右。它比偶极相关时间大一个数量级。这意味着,自旋扩散时间常数与自旋—自旋弛豫时间常数是很不相同的,虽然这两个相应过程虽密切相关的。由质子线宽估计自旋扩散系数是不可靠的。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关相关时间的内容
在知识搜索中查有关相关时间的内容
在数字搜索中查有关相关时间的内容
在概念知识元中查有关相关时间的内容
在学术趋势中查有关相关时间的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社