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指数衰减

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The transient is seen to be a decaying exponential, and the commonly used measure of the speed of decay is the time constant

由图可见,瞬态响应为指数衰减的,通常用时间常数来衡量其衰减速度。

The transient is seen to be a decaying exponential, and the commonly used measured of the speed of decay is the time constant: The time constant is the time in seconds for the decaying exponential transient to be reduced to e-1=0.368 of its initial value.

瞬态解看上去为指数衰减的,且通常用于衡量衰减速度的是时间常数:即指数衰减的瞬态解衰减至其初始值的 36.8%所需的时间。

Experimental results show that the exponential expression can approprielly describe change of observation weight with distance,and the determination of loss index is of great importance.

结果表明,指数衰减形式能较好地描绘观测值权值随距离的变化情况;其中衰减指数的选取是关键。

The exponential attenuation curve of the gain along the pulse propagation time is simulated.

分析了分幅相机增益衰减的理论模型,利用Mathematica软件模拟了增益随电脉冲传输时间指数衰减的曲线图。

Downward wave amplitude decay in negative exponential function, but the upward wave amplitude is not the case.

下行波的衰减规律符合指数衰减,但上升波的衰减并不符合这一规律。

Further, fluorescence decay exhibits more close to single exponential decay profiles and has longer measured lifetime.

此外萤光衰减呈现出接近单一指数衰减的曲线并且有著较长的生命期。

The time correlation function of concentration fluctuation for PSt-DVB having wave vector q is proved to have the form of an exponential decay.

该微粒的浓度涨落时间相关函数在波矢为q时,有指数衰减形式,其衰减速率г=q2Dt。

For Permalloy/FeMn bilayers, the exchange field and coercivity decay exponentially in time with the application of an applied field antiparallel to the unidirectional anisotropy direction. The relative change of the exchange field, 1-H〓/H〓(t=0) also decays in an exponential manner with the FeMn layer thickness.

通过Py/FeMn双层膜结构研究了反铁磁层的厚度对交换耦合热稳定的影响,发现对于Py/FeMn双层膜,在外场方向与单向各向异性方向反平行时,交换偏置场和矫顽力随时间的变化呈指数衰减,耦合场和矫顽力的相对变化随FeMn层的厚度衰减。

Further picosecond PL studies on dendronized PFs show that the fluorene-based emission in dilute solution follows a single exponential decay, whereas those in thin film decayed in a multi-phase manner and the lifetime prolongs with the generation of dendronization. These observations are discussed in terms of dispersive transport happening between adjacent chains in film. The dispersive relaxation can be controlled by site isolation of bulky dendrons. Our results prove that dendronization is highly effective in controlling the inter-chain interactions of fluorene-based polymers.

不同代数树枝化聚芴的时间分辨荧光动力学研究结果表明,溶液状态下的发光为单指数衰减行为,而薄膜状态下的发光为多指数衰减行为,且其发光寿命随树枝化代数增加而增长,表明树枝化基团抑制了邻近的聚芴分子之间能量传递所致的激发态能量耗散。

The resonance amplitude and resonance frequency are studied with various gas flow rate in a cylindrical resonance cavity.

实验结果表明:共振幅度和共振频率随着气体流量的增加都呈指数衰减变化趋势,但共振幅度比共振频率的衰减速度快,都可反映气体流量的变化。

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随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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