查询词典 decay constant

8When the decay constant increases, the advertising cost increases in S shaped , but it decreases concave upward in concave shaped function.

8当衰变常数β递增时，除了在S型函数的广告支出呈现向上递增外，其他反应效果均为凹面向上向下递减。

By using this method, the angular frequency, amplitude, initial phase angle, decay constant of each component in transient voltage and/or current waveforms can be precisely extracted. Also, all other kinds of transient procedure can be analyzed by this method. Thirdly, a new definition of generalized instantaneous reactive power and generalized instantaneous reactive current in dq0 coordinates under any nonsinusoidal and unbalanced three-phase circuit is proposed for the first time. The detection and compensation method for different instantaneous reactive currents are also concerned.

本文首先提出了用于快速高精度频谱分析的一种改进快速傅立叶变换方法，该法具有速度快、精度高、抗混迭、不受采样定理约束、可以分析出谐次大于N／2的频谱系数等特点，可方便地应用于电力系统谐波分析及其它各类频谱分析；然后提出了基于非线性最小二乘优化法的电力系统暂态波形分析方法，可准确求出电力系统暂态电压、电流波形中各个分量的角频率、幅值、初相角及衰减常数，并可广泛应用于各类暂态过程波形分析。

And the decay constant estimates the likely reduction in sales if advertising for the product or service were discontinued.

而衰减函数估计了如果停止关于产品或服务的广告，销售上就有可能带来的减少。

In person this product cooperates to the soil good, not decay, constant, not poisonous harm.

本产品对土壤亲合力好、不腐蚀、不变性、无毒害。

We have also shown that our general formula for thepion decay constant 〓 reduces to the well-known Pagels-Stokar formula undercertain approximations.

同时，我们证明了，在一定近似下，可以从我们对π介子衰变常数〓的一般定义推出著名的Pagels-Stokar公式。

In chapter 6, within a two-band tight-binding model driven by a dc-ac electric field, we investigate the effect of external noise on the transport property of electrons by controlling the strength and the decay constant of the noise.

在第六章，利用直交流电场驱动下的双带紧束缚模型，我们研究了外部噪声对电子输运性质的影响。

The effects of the initial field states, different value of decay constant and the initial atomic states on all the entropies are discussed.

结果表明：光场的不同量子统计性质使得系统线性熵、原子线性熵和光场线性熵均发生明显改变。

The results show that, in the lower voltage regime, the molecular currents decreased exponentially with the molecular length, and the corresponding decay constant is about 1.41/CH2. Furthermore, the decay constant is demonstrated to be almost independent of the external voltage.

研究结果表明，在低的外加偏压下，烷烃硫醇分子电流值随着分子链长度的增加而指数减小，其衰减常数约为1.41/CH2，且衰减常数基本上与外加偏压值的大小无关。

The decay of ~(99m)Tc source was used to verify experimentally that in the measurement of the number of atoms of a radioactive isotope in a sample at time t_0, the error introduced through the inaccuracy of its decay constant can be reduced to a much smaller value by the careful selection of the time of measurement or measurements of its radioactivity at around one life time (1/λ) after t_0 and doing the calculation.

本文用~(99m)Tc源的衰变实验证明了：在测量一个样品中在t_0时的一种放射性同位素的原子数时只需精心选择一次或多次测量其放射性的时刻在t_0后约该同位素的一个寿期(1/λ)，并进行计算，则由它的衰变常数或其半衰期(T1/2)的不准确性而引进的误差可以被降低到较小值。

The research discover that starfruit polyphenols have thermal sensitiveity which obeys 1st order decay. Else, it has polyphenol oxidase in the extraction liquid. The decay constant of 35℃ is higher than others (35℃＞55℃＞70℃＞80℃).

研究中发现杨桃多酚具温度敏感性，随时间的增加以一阶方式衰退，此外还发现杨桃中含有多酚氧化酵素，使得在35℃时衰退常数kd = 4.34×10-3 min-1，较高温时要来的大，如70℃时kd = 3.33×10-3 min-1。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。