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时间    
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  time
    ON THE SEPARATION OF THE WAVES FROM THE DISCRETE METEOROIOGICAL TIME SERIES
    关于离散型时间序列中的波动的分离
短句来源
    Time Series Analysis and Model Features of Modern Climate
    当代气候的时间序列分析和模式特征
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    A NEW FORECASTING METHOD OF TIME SERIES AND ITS APPLICATION
    一种新的时间序列预报方法及其应用
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    ESTIMATING WEATHER PREDICTABILITY FROM THE TIME SERIES OF WEATHER VARIABLES
    用天气变量时间序列估计天气的可预报性
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    MEASUREMENT OF THE LYAPUNOV INDEX SPECTRUM FROM CHAOTIC TIME SERIES
    从混沌时间序列中测量Lyapunov指数谱
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  time of
    24 case computations are completed during Novemenber 1990 to February 1991. The results show that it has success rate of 70% and average error of predicting the time of fog formation is 1. 7 hours.
    通过对1990年11月~1991年2月24次的个例计算,预报成功率达70%,雾形成时间平均误差为1.7小时。
短句来源
    From the 10min variation of the greatest amplitude of air pressure at each station, the intensity and time of occurrence are well related with rainfall.
    由各站气压10分钟最大振幅变化看其强度大小及出现时间都与降水有较好关系。
短句来源
    The results indicate that the cold mortality of young spikes(its logistic transformed value being Y)is closely correlated to wheat variety(X3)and application time of first earing dressing(X8) ; besides it has also a nonnegligible important relation to the application time of second earingdressing (X10).
    结果表明,小麦幼穗冻死率(其logistic转换值为Y)与小麦品种(X3)和第一次穗肥施用时间(X8)密切相关,与第二次穗肥施用时间(X(10))也有不可忽视的重要关系。
短句来源
    Bsed on the data from the Typhoon Almanac in the period of 1981 to 1996 and gray predictive theory, this paper suggests a GM(1,1)prediction model to be applied om the occurring time of the typhoon which seriously affected Shanghai and its neighboring region.
    本文利用台风年鉴1981~1996年的资料,根据灰色灾变预测方法,建立了对上海市及其邻近区域产生严重影响的强台风出现时间的GM(1,1)预测模型。
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    The results indicate that the hail with charge and strong electric field make precipitation and diameter of hail particles on the ground increase 50% and 0.7mm , respectively, and the time of hail shooting lag 3 minutes.
    结果指出 ,带电冰雹与云内强电场作用使地面降雹量增加约 5 0 % ,雹块直径增大 0 .7mm ,降雹时间滞后约 3min .
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  the time
    ESTIMATING WEATHER PREDICTABILITY FROM THE TIME SERIES OF WEATHER VARIABLES
    用天气变量时间序列估计天气的可预报性
短句来源
    The precipitation forecast of six NWP models, including T213L31, HLAFS25, Huabei-MESO-MM5, MESO-GRAPES, Germen global model and Japanese global model, which are widely applied in CMA are verified and assessed synthetically by seasonal spatial distribution, the time series of regional mean and statistic method.
    本文对目前在国家气象中心广泛应用的4个国内开发的模式T213L31、HLAFS25、华北中尺度模式MM5及MESO-GRAPES模式和德国及日本模式的降水预报产品进行了季节空间分布、区域时间序列演变及统计检验,试图从空间、时间及统计方面对降水预报产品的预报性能进行综合评估。
    Features of the Variable Dimension Fractal on the Time Distribution of Drought and Flood Disasters in Sichuan
    四川旱涝时间分布的变维分形特征
短句来源
    ON THE TIME INTEGRATION OF RADIATION HEATING PROBLEMS
    论辐射加热问题的时间积分
短句来源
    Although climate is the factor of which determine vegetationdistributing in wide range, its influence is related with the time and space。
    气候虽然是决定大范围植被分布的因子,但其影响的大小却与所考虑的时间与空间有关。
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  time
The proof is based on a variant of Moser's method using time-dependent vector fields.
      
We present two-sided singular value estimates for a class of convolution-product operators related to time-frequency localization.
      
The Balian-Low theorem (BLT) is a key result in time-frequency analysis, originally stated by Balian and, independently, by Low, as: If a Gabor system $\{e^{2\pi imbt} \, g(t-na)\}_{m,n \in \mbox{\bf Z}}$
      
Gabor Time-Frequency Lattices and the Wexler-Raz Identity
      
Gabor time-frequency lattices are sets of functions of the form $g_{m \alpha , n \beta} (t) =e^{-2 \pi i \alpha m t}g(t-n \beta)$ generated from a given function $g(t)$ by discrete translations in time and frequency.
      
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  time of
In a life test with 20 sets of bearings, only one set failed within the specified time, and none of the remainder failed even after the time of test has been extended.
      
Let W be a standard Brownian motion, and define Y(t)=∫0tds/W(s) as Cauchy's principal value related to the local time of W.
      
Under appropriate hypotheses, the global existence and blow-up in finite time of positve solutions are obtained.
      
The processing time of a batch is given by the longest processing time of any job in the batch.
      
It is assumed that the retrial time, service time and repair time of the server are all arbitrarily distributed.
      
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  the time
For a fairly general class of orthonormal scaling functions and wavelets with regularity exponents n, we prove that the areas of the time-frequency windows tend to infinity as n → ∞.
      
We study boundary value problems for the time-harmonic form of the Maxwell equations, as well as for other related systems of equations, on arbitrary Lipschitz domains in the three-dimensional Euclidean space.
      
We study boundary value problems for the time-harmonic form of the Maxwell equations, as well as for other related systems of equations, on arbitrary Lipschitz domains in the three-dimensional Euclidean space.
      
Finally, we consider the spline of order 2; we investigate numerically the region of the time-frequency plane where it generates a frame and we compute the dual function for some values of the parameters.
      
Our proofs proceed in the time domain and allow us to represent each solution regardless of the spectral radius of P(0):=2-s∑cα, which has been a difficulty in previous investigations of this nature.
      
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  reaction time
The influence factors of the synthesis were discussed, and the best reaction conditions were found: the molar ratio of n-butyraldehyde to 1,2-propanediol is 1:1.5, the amount of catalyst used is 1.2% of feed stock, and the reaction time is 1.0 h.
      
The Fe3O4 magnetic fluid was obtained by one-step method with the W/O microemulsion as microreactor to synthesize magnetic nanoparticles (reaction temperature was 30 °C and reaction time was 5 h) and kerosene as carrier liquid.
      
The enantiomeric excess of the reduction product was up to 83.2% with cyclohexane as the solvent, the molar ratio of ligand: reductive agent: β-acetonaphthalene is 0.04:1.6:1, and 72-hours reaction time at 0°C.
      
Effect of the reaction time, mole ratio of reactants, and amount of catalyst on the yield of benzodioxoles were investigated.
      
The best reaction conditions: molar ratio of catechol to aldehydes or ketones is 1:1.4, catalyst amount is 3.5 g/l mol catechol, reaction time is 5 h.
      
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