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rapid attenuation
相关语句
  迅速衰减
     Rayleigh wave is a secondary wave characterized by low frequency and strong energy,propagating mainly along the interface of medium and rapid attenuation of energy with increase in interface distance. Like the reflection and refraction,the Rayleigh wave also contains geologic information of subsurface medium.
     瑞利面波是一类频率较低、能量较强的次生波 ,且主要沿着介质的分界面传播 ,其能量随着与界面距离的增加迅速衰减 ,它与反射波、折射波一样都含有地下介质的地质信息。
短句来源
  “rapid attenuation”译为未确定词的双语例句
     The rapid attenuation of optical power and the crosstalk of underwater acoustic signal are the key problems of application systems.
     在时分复用系统中,光能量的急剧衰减和信号串扰是系统应用中必须解决的关键问题。
短句来源
     The problems of early destroy about expressway asphalt pavement rapid attenuation of pavement function and decrease of practice application age appear, higher request is put forward to expressway maintenance administration.
     高速公路沥青路面的早期破坏,路面使用功能的急速衰减,实际使用年限的降低等问题的出现,对高速公路养护管理提出了更高的要求。
短句来源
     In the forward detonation case, the conical contraction can make use of concentration of energy to not only strengthen incident shock wave but also produce a reflection shock wave, which can weaken the negative effects of rapid attenuation of the incident shock wave caused by the tightly followed rarefaction wave.
     正向爆轰时主膜处的收缩段产生的汇聚作用既加强主激波又产生反向激波,缓解了爆轰波阵面后紧跟着的稀疏波导致主激波衰减偏快的不利影响.
短句来源
     By introducing the characteristics and intensity distribution of Ru-Shan M_L4.3 earthquake sequence on January 18,2005,it is recognized that this sequence is a mainshock-aftershock sequence with rapid attenuation of energy,and fluctuation in frequency,the sequence itself has no precursory meaning.
     对2005年1月18日乳山ML4.3地震序列特征及烈度分布进行了介绍,认为乳山ML4.3地震序列是一次能量衰减较快、频度起伏衰减的主-余型地震序列,序列本身不具有明显的前兆意义。
短句来源
     Comparing with step wave,the feature of slanting wave is the high frequency components with rapid attenuation and simultaneous oscillation. The effect of slanting wave mainly influences the early channel of transient electromagnetic signal and the result shows lower response.
     斜阶跃波相对阶跃波高频迅速振荡衰减,斜阶跃波效应主要影响瞬变场的早期,表现为幅值较低,关断时间越长,影响越大。
短句来源
  相似匹配句对
     It is rapid and accurate.
     这是一种迅速而精确的方法。
短句来源
     With the rapid development of the
     愿本文能为《公司法》的修改稍尽微薄之力。
短句来源
     Attenuation: 2;
     衰减2;
短句来源
     the larger the pressure,the more rapid the attenuation for the same initial duration of stress wave.
     对于脉冲宽度一定的热激波,热激波的强度越高,则其衰减越快.
短句来源
     The shorter the duration of the stress wave,the more rapid the attenuation for the same initial pressure;
     热激波在靶中的衰减与波的强度和脉冲宽度有关,对于强度相同的热激波,脉冲持续时间越短,热激波的衰减则越快;
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  rapid attenuation
For the proximal zone, involving radial distances (r) up to 1.3 km from the source, the runup height (R) shows rapid attenuation (from >amp;gt; 30 m to 8 m) with distance as log R = -1.98 log[r] + 2.6.
      
It is suggested that in the description of concentrated forces instead of using the classical Dirac delta function model, the nonsingular rapid attenuation function model of nonlocal elasticity is adopted.
      
A rapid attenuation of muscarinic agonist stimulated phosphoinositide hydrolysis precedes receptor sequestration in human SH-SY-
      
Effective long-term therapy can be provided by interval treatment with nightly patch removal, but even during the hours of intermittent patch application there is rapid attenuation of initial effects.
      
Results: The application of EMS resulted in rapid attenuation of the MEG activity of epileptic patients.
      
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A group of moderately strong earthquakes has occured in Datong- Yanggao area since Oct. 18 1989. This sequence, of which the characteristics are different from that of the earthquakes occured before in the same area, belongs to main shock-swarm type. It is characterized by either main shock-after shocks type or swarm type. It occured which initially includes several moderately strong events and was followed by the rapid attenuation of seismic enerage with strong after shock periodic fluctuation. We have...

A group of moderately strong earthquakes has occured in Datong- Yanggao area since Oct. 18 1989. This sequence, of which the characteristics are different from that of the earthquakes occured before in the same area, belongs to main shock-swarm type. It is characterized by either main shock-after shocks type or swarm type. It occured which initially includes several moderately strong events and was followed by the rapid attenuation of seismic enerage with strong after shock periodic fluctuation. We have made an analysis by using the seismic data of Zhang Jiakou station after the Datong-Yanggao main shock. The results have shown that the correct analysis for the characteristics of the earthquake sequence by sufficient single station data is of great significance for in situ seismic monitor and prediction.

1989年10月18日起,在大同—阳高一带相继发生了一群中强地震。其地震序列与以往发生在该区域的大多数地震不同,属主震群型,它既有震群型特征,又具有主余震型特征,并且强余震的间隔时间具有韵律特征。震后对张家口台的资料分析结果表明,只要充分利用单台资料,并正确分析地震序列特征,对地震现场的监视预报,具有很好的实用价值。

The effects of disturbed incoming flow on the acoustic control of separated flow over a 2-dimensional low speed airfoil under high incidence have been investigated experimentally,including the benefits of acoustic excitation,the influence of parameters of exciting sound,and the variation of flow parameters in the boundary layer.The testing results indicate that,the flow velocity fluctuation of Large Scale Organized Structure Vorticity (LSOSV) v l and the benefit of turbulence intensity in the boundary layer...

The effects of disturbed incoming flow on the acoustic control of separated flow over a 2-dimensional low speed airfoil under high incidence have been investigated experimentally,including the benefits of acoustic excitation,the influence of parameters of exciting sound,and the variation of flow parameters in the boundary layer.The testing results indicate that,the flow velocity fluctuation of Large Scale Organized Structure Vorticity (LSOSV) v l and the benefit of turbulence intensity in the boundary layer u ′ a/U ∞,the benefit of lift coeffecient,induced by exciting sound,will rapidly decrease along with the increase of turbulence intensity in the incoming flow.But the effective threshold value of sound pressure level will still enlarge gradually.It is also shown that,because of the rapid attenuation of oscillating velocity amplitude △ U ∞/U ∞ along the flow direction at natural flow field without exciting sound,the oscillating incoming flow has no effect on the benefits of acoustic excitation for the low speed 2-dimensional airfoil by and large.

本文介绍在扰动来流下声控机翼流动的试验装置、低速大攻角时的声控效果以及附面层中流动参数的变化规律,并由此得出:随着来流湍流度的增加,因声激励而产生的附面层中大尺度有序结构涡(LSOSV)的脉动速度幅值Vl、湍流度增量u′a/U∞以及升力系数增益△CL均将迅速减小,而激励声压级有效阈值SPLeff则随之逐渐增大。周期性脉动来流在沿机翼附面层流动中急剧衰减,并对机翼分离流动(包括有或无声控)基本上没有什么影响。

Rayleigh wave is a secondary wave characterized by low frequency and strong energy,propagating mainly along the interface of medium and rapid attenuation of energy with increase in interface distance. Like the reflection and refraction,the Rayleigh wave also contains geologic information of subsurface medium.Based on basic methods investigating near-surface structure by Raileigh wave,the paper computes near-surface structure using real data of multi-layers and dip-layers,which proved again that it is feasibility...

Rayleigh wave is a secondary wave characterized by low frequency and strong energy,propagating mainly along the interface of medium and rapid attenuation of energy with increase in interface distance. Like the reflection and refraction,the Rayleigh wave also contains geologic information of subsurface medium.Based on basic methods investigating near-surface structure by Raileigh wave,the paper computes near-surface structure using real data of multi-layers and dip-layers,which proved again that it is feasibility using Rayleigh wave on seismic single shot records for investigation of near-surface structure.

瑞利面波是一类频率较低、能量较强的次生波 ,且主要沿着介质的分界面传播 ,其能量随着与界面距离的增加迅速衰减 ,它与反射波、折射波一样都含有地下介质的地质信息。本文基于瑞利面波表层调查的基本方法 ,以多层、倾斜层的实际数据为实例进行表层结构计算 ,再次证明利用地震勘探单炮记录中的瑞利面波进行表层调查是可行性的。

 
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