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   演变周期 的翻译结果: 查询用时:0.024秒
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演变周期
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  evolution period
     The evolution period of time function with the monthly surface temperatureeigenvector over the middle reaches of the Huanghe River from January 1957 to Decem-ber 1977 and their relation with the monthly SST (sea surface temperature) over thewest,east and north equatorial Pacific and the SOI (Southern Oscillation index) arediscussed by means of the expanded empirical orthogonal function and the spectrumanaltsis method.
     采用经验正交函数(EOF)展开和波谱分析方法,讨论1957年1月至1977年12月黄河中游地面月气温特征向量时间函数演变周期,及其与赤道西、东、北太平洋海域月海温以及南方涛动指数的关系。
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  “演变周期”译为未确定词的双语例句
     Therefore,0.6 MaB.P.
     开始东亚季风出现冷暖大幅振荡的100 ka演变周期,因而0.6MaB.P.
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     The results indicate that the local-air systems at 9 stations along Qinghai-Xizang Railway are obvious nonlinear systems, and their inherent periods are form 3 to 6 years.
     结果表明,青藏铁路沿线9个测站局地气温系统是明显的非线性系统,其演变周期大致在3~6年之间,气温振幅随时间增加而衰减。
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     Results were reported relative to the V-PDB standard.
     根据分析结果,我们就可以将兰州地区古环境划分出不同尺度的演变周期
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     Section short EP is advised to realize DOA estimation of wide-band FM signals,while DFT-EP can also be used to resolve the same problem in frequency domain.
     提出了分段短时演变谱方法,并用之解决了宽带FM信号的测向问题。 利用频域聚汇和DFT演变周期谱方法提出了另一种宽带FM信号到达角估计的新思路。
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     The main conclusions drawn from this paper are as follows:(1) The ancient climate evolution, from twenty-two thousand to ten thousand years before present, Diexi, Minjiang River, is from dryness to wetness and can be divided into six phases and two periods by analyzing the ancient barrier lake sediments through multi-environment indicators, and its evolution cycle is three thousand years or so.
     (1) 通过利用多环境代用指标对岷江叠溪古堰塞湖沉积物的综合分析得出,岷江叠溪地区距今约22千年至10千年间的古气候经历了干旱→湿润→干旱的演化过程,演变周期大约为3千年,并将其划分为六阶段、两时期。
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  相似匹配句对
     A BRIEF DISCUSSION OF CYCLE
     周期浅析
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     the investment cycle;
     投资周期;
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     Studies on the Expansion-Contraction Law and Turning Points of Power Demand Cycle in China
     中国电力需求周期演变规律及转折点研究
短句来源
     PERIOD-DOUBLING BIFURCATIONS OF THE ATMOSPHERIC CIRCULATION AND APERIODIC VARIATIONS OF THE FLOW PATTERNS
     大尺度大气运动的倍周期分叉和流型的非周期演变
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     The Evolution of Luxun's Image
     鲁迅形象的演变
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  changing period
The foundation of the method consists in the formation of an input signal in the form of interference fringes with a gradually changing period.
      
Development mechanism of urban system in rapidly changing period in China
      
The experimental approach to measure entrainment limits is the application of an artificial zeitgeber with slowly and steadily changing period.
      
  evolution period
Dolomieu: A scientist of the evolution period of geology as an independent science
      
Their ages and the evolution period of their disease are widely spread and no sex differentiation was made.
      
The conditions for coexistence of single impact periodic orbits are derived, and in particular, it is investigated in details how to assure that no other impacts will happen in an evolution period of a single impact periodic motion.
      
If radio-frequency power is applied during the systematically increasing evolution period t1, the sample temperature can change with t1 and thereby cause line-shape distortions.
      
The determination of T2 for the Cα-carbon in a completely labeled protein is more complicated, since the magnetization transfer during the T2 evolution period owing to the scalar coupling of Cα-Cβ must be suppressed.
      
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Using an eighth-order set of determinate, forced, dissipative, and nonlinear autonomous equations, which governs the dynamics of a quasi-geostrophic flow of the baroclinic atmosphere, the chaotic forms of large-scale atmospheric motion are investigated numerically. In certain ranges of the thermal forced parameters, the chaotic forms of the variations of the flow patterns are exhibited distinctly. Along with gradual change of the thermal forced parameter, transformations between periodic and chaotic motion forms...

Using an eighth-order set of determinate, forced, dissipative, and nonlinear autonomous equations, which governs the dynamics of a quasi-geostrophic flow of the baroclinic atmosphere, the chaotic forms of large-scale atmospheric motion are investigated numerically. In certain ranges of the thermal forced parameters, the chaotic forms of the variations of the flow patterns are exhibited distinctly. Along with gradual change of the thermal forced parameter, transformations between periodic and chaotic motion forms occur repeatedly. The windows of period-3 and period-6 emerge also in the chaotic regions.The periodic motion forms of the flow patterns corresponde to the periodic low-frequency vacillations of the subtropical high cells along the zonal direction during summer half year. After the transformation from periodic to chaotic form occurs, these regular vacillations are broken immediately. This phenomenon of the establishing and the breaking of the periodic low-frequency vacillation of the subtropical high cells along the zonal direction tallies with observational fact.

本文用一个确定的强迫耗散的八维非线性自治系统描述大尺度斜压大气的运动。在一定的热力强迫范围,流型演变显示出浑沌形态。随着热力强迫的渐变,发生了浑沌形态与周期形态之间的多次转换。在浑沌区内又清楚地显示出周期3和周期6的窗口。 流型演变的周期形态,相应于夏半年对流层上层副热带高压中心沿东西方向的周期的低频振荡。转为浑沌形态后,这种规则性的低频振荡即遭到破坏。这个副热带高压周期性东西振荡的建立与破坏的现象,与实际大气的观测事实十分相似。

In this paper the midium and short periodic fluctuations of meteorological components related to crop yield in China are discussed by means of spectrum analysis,periodogram and variance analysis. It is shown that the spectral distributions in different parts of the country are basically similar and particularly occur in a period of about 4-6 years and even twice of the period. It could be deduced that the fluctuations of agromete-orological thermal factors influence the periodic fluctuations of the meteo rological...

In this paper the midium and short periodic fluctuations of meteorological components related to crop yield in China are discussed by means of spectrum analysis,periodogram and variance analysis. It is shown that the spectral distributions in different parts of the country are basically similar and particularly occur in a period of about 4-6 years and even twice of the period. It could be deduced that the fluctuations of agromete-orological thermal factors influence the periodic fluctuations of the meteo rological components related to crop yield and hence result in periodic variations of crop yield.

本文应用功率谱、周期图和方差分析等方法探讨了全国及部分代表省(区)粮食单产中气象分量的中短周期波动。发现各地气象分量的谱分布基本相似,普遍存在4—6年及其倍数的周期波动。同时,各地表现又略有不同,由南往北周期逐渐变长。通过与农业气象热量因子以及粮食产量增减产年历史演变的周期波动的比较,似可初步推理为,热量因子的周期波动影响了气象产量的周期波动,从而导致作物产量的周期演变。这一初步推理为我国粮食产量的气象预测预报的基础研究和实践应用提供了参考依据。

With the help of the temperature data ( 1873-1985 ) of Shanghai, the long-rang variations of the winter temperature in the lower reaches of the Yangtze River are examined. It is found that there are obvious stages of the winter temperature in 1873-1985. There are there lower temperature stages and two higher temperature stages. 2 to 3 , 40 and 70 to 80 year fluctuations are significant in the variations of the winter temperature.We have discussed in this paper the effect of volcanic eruptions on variations of...

With the help of the temperature data ( 1873-1985 ) of Shanghai, the long-rang variations of the winter temperature in the lower reaches of the Yangtze River are examined. It is found that there are obvious stages of the winter temperature in 1873-1985. There are there lower temperature stages and two higher temperature stages. 2 to 3 , 40 and 70 to 80 year fluctuations are significant in the variations of the winter temperature.We have discussed in this paper the effect of volcanic eruptions on variations of the winter temperature.

本文利用上海113年(1873—1985)气温资料,分析了长江下游冬季冷暖长期演变规律.结果表明:冬季冷暖长期演变存在着明显的阶段性,一百余年冷暖交替出现,经历了三段冷期和两段暖期.冬季冷暖长期演变的显著周期有2—3年、40年左右、70—80年等.本文讨论了大火山爆发对长江下游冬季冷暖变化的可能影响.在统计上,火山活动70年左右的周期振荡与上海冬季温度70—80年演变周期相吻合.

 
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