衰减的

Decay constant k of Surface Dynamics of the modified surface can be calculated using the measurement results of the contact angle and the angle - dependent XPS, being a probe, k values can be used to characterize the surfa...

通过PET表面的接触角及F/C比的测定，计算出表面动力学衰减常数k，三种测试方法得到的k值都可以用来表征碳氟等离子体处理PET的表面动力学行为，其中混合气体的k值最小。

First, with the help of I-H model and Y-T model, the luminescence decay curve of 〓 of Tm〓 was fitted, and the fitted values of corresponding energy transfer interaction parameter C〓 and energy migration interaction parameter C〓 were calculated.

首先，藉助I-H、Y-T模型拟合了Tm〓的〓的发光衰减曲线，得到了相应的能量迁移和能量传递的作用参数C〓和C〓的拟合值。

The viscosity of the medium will cause dissipation of seismic energy, thus decreasing the amplitude and modifying the frequency content of the propagating wavelet. In order to obtain accurate information and imaging with high distinguishability from seismic data, the propagating rule of wave in viscoelastic medium should be studied.

地震波在大地介质的传播过程中，不仅波的振幅会衰减，而且有频散现象，因此要从地震数据中得到复杂构造的准确信息和高分辨率的图像，就必须研究粘弹性介质中波的传播规律。

Position parameters were obtained from the simulation with the model of towed array.Based on the theory of radiated noise forming, the launch noise was simulated according to test condition in Laboratory,and the result showed the launch impulsion noise obeyed SαS distribution. The simulated noise attenuating in deep sea was analyzed with a sound loss translation model.Minimum variance distortionless response,spatially smoothed MVDR, and beam-space multiple signal classification algorithm were adopted to process the signal, hence the source level, the frequency structure and the location of the launch noise were achieved.

基于试验的实际情况，根据潜艇拖曳阵模型，仿真生成了各水听器阵元与本艇的位置关系；根据噪声源理论模型分析产生雷弹发射模拟噪声，利用SαS分布模拟武器发射冲击噪声，仿真分析模拟噪声在海洋环境中的传播衰减，对阵元信号分别利用最小方差无畸变响应法（MVDR 、空间平滑MVDR以及适应子带的波束域多重信号分类算法进行信号处理，得到发射噪声的声源级、频谱结构和方位。

And alarmist politicians and doomster academics may, in pointing to the state of decay, miss a nation's continuing strengths and attractions, which have to be weighed against its problems and worries.

而杞人忧天的政客和末日论的学者们则可能在指出衰减状态的同时也遗漏了国家持续的国力和吸引力，这些都应该与面临的问题和担忧受到同等重视。

The coefficient of non-algal particulates is decreasing with the increase of wavelength, which can be described by exponential law.

非藻类颗粒物的吸收系数随着波长的增大而减小，可用指数衰减规律来描述；光谱斜率S较离散，但平均值与文献报道的一类水体S的平均值很接近；光谱截距ad0(λ0)随盐度增大而减小，二者有很好的线性关系。

Based on the comparison of the delayed neutron counter rate of known fission rate with the delayed neutron counter rate of a burst,a method to determine burst total fission number of burst reactor was built.

用长计数器测量已知裂变率的缓发中子计数率，然后用同一探测系统测量脉冲后的缓发中子计数率，探测系统的探测效率、缓发中子份额和缓发中子先驱核半衰期等参数均不变，从而建立起利用脉冲堆脉冲后的缓发中子衰减曲线确定脉冲裂变总数的方法。

It solves the problem that how to calculate diffusion coefficient D when the fluorescence have significant linear attenuation which is often observed in FRAP experi- ments.

本文提出了一种切实可行的计算膜脂流动性的方法，给出了详细的实施步骤、计算方法及结果，并解决了在荧光存在明显线性衰减这一常见情况下的扩散系数D 的计算问题。

Therefore, noise reduction is a necessary part of video processing. Spatial filter and temporal filter were proposed to reduce noise in video in previous works. Both of them have disadvantages such as ghost effect of spatial filtering and blurring in temporal filtering.

以往的滤波器若只考虑利用空间域上的资讯做杂讯衰减，会有残影的情况发生；若只考虑利用时间域上讯号间的相关性来滤除杂讯，则无法消除短暂突发性的杂讯。

A key point in Short Time Fourier Transform is the choice of window function. Although rectangle window is regarded as the first choice because it's featured by integral harmonic to filter signals and by DC component, decaying DC component and frequency shift of signals cause great error to rectangle window STFT. In addition, transient signals contain rich information of faults, but the fixed time window of STFT fail to collect these information.

STFT 算法关键问题之一是窗函数的选择，矩形窗以滤除信号整数次谐波和直流分量的特点自然称为首选窗，但衰减直流分量和信号的频率偏移对矩形窗 STFT 造成了很大误差；其次，暂态信号中含有丰富的故障信息，傅立叶变换固定的频窗忽略了这些特征信息。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。