衰减

This means that the presence of dark energy makes scalar field damp more rapidly.

这表明暗能量的出现使标量场的衰减加快。

In chapter Five, A simulation method for ultrasound backscattered signal is proposed, which take involves ultrasound propagation in soft tissues and its interaction with tissues and different kinds of scattering patterns in tissues. A new scatterer spacing imaging method based on wavelet transform theory has been developed.

第五章提出了基于散射元空间分布的生物软组织的超声背向散射信号建模与仿真的新方法，这种方法的特点是综合考虑了散射元空间概率分布与组织中的超声衰减现象这两种不同类型的效应，同时还考虑了肝脏组织不同类型的散射模式。

Regarding the extinction of every kind of scatter, the results of the sum of scattering and absorption coefficient, and that from forward scattering theory are compared and discussed.

关于各类散射体的衰减，本文比较了散射系数和吸收系数之和，与前向散射定理的结果，并对前向定理的适用性进行了讨论。

Based on equivalent circuit approach, the transmission and attenuation characteristics of the two dominant modes of IDG are schematically analyzed.

采用一种基于等效电路的方法，系统地分析了插入介质波导中两种主模式的色散特性以及衰减特性。

The results show that PbFCl is a new kind of inorganic scintillating crystal with high density and fast decay at room temperature.

实验结果表明PbFCl晶体在室温下是一种高密度、快衰减的新型无机闪烁晶体。

Empirical expressions of the total longitudinal strain and the secant modulus are given.

给出了纵向总应变、割线模量的经验公式，及其第二阶段总应变增长率、割线模量衰减率分别与疲劳寿命的经验公式。

Due to forward-bias-induced annealing effects,the laser diode biased during irradiation is less degraded than that short-circuited,and annealing curves can be fitted sectionally with different annealing rates.

激光二极管辐射损伤存在着正向偏置退火效应，FP和DFB结构的二极管具有相似的加电退火规律，均可拟合成指数衰减形式，退火曲线可以分成退火常数不同的几段进行拟合。

A charge pump phase locked loop based on self biased technique is presented. In this technique, the operating bias levels are essentially established by the operating frequency of the voltage controlled oscillator, namely, all bias voltages and currents are determined by VCO controlling voltage. Thus, a fixed damping factor and a fixed ratio of the bandwidth to operating frequency are obtained, which are defined by th...

给出了基于自偏置技术的电荷泵锁相环电路，压控振荡器的工作频率动态地建立了电路内部所有的偏置电压和电流，从而实现了固定衰减因子，固定环路带宽与工作频率之比，这二者由电容的比率决定，极大地实现了电路设计的工艺无关性，同时也得到了小的相位抖动，最后，对这种锁相环的稳定性进行了一定的分析。

Visual analysis and semiquantitative analysis were performed on AC and non-attenuation correction images.

进行AC和非衰减校正图像视觉分析和半定量分析比较。

They are the sense of personal profession achievement, the sense of profession load and stress, the decline of work passion.

调查结果显示，幼儿教师职业倦怠主要表现为个人职业成就感、职业负荷和压力感受、工作热情衰减。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。