衰减

The constant of electrostatic charge decay time is an important physical quantity that can describe the electrostatics property ofmaterials.

静电衰减时间常数是定量描述材料静电性能的重要物理量。

In this paper, the origin, propagation and attenuation of environmental vibration is studied by both test and theory method, so that we can evaluate and forecast the environmental vibration produced by elevated railroad traffic according to practice.

本文就高架轨道交通引起环境振动的发生机理及振动的传播和衰减规律进行实测及理论分析研究，以便对高架轨道交通引起环境振动进行切合实际的评价和预测。

The concept of attenuation ellipsoid is proposed.

提出了衰减椭球概念。

The concept of generalized ellipsoid is proposed.

同时证明了广义特征值对应定理，研究了各种意义下的广义衰减椭球的几何意义和特征值的相互关系。

Further generalization gives out the concept of generalized attenuation ellipsoid and its application.

进一步推广，给出了广义衰减椭球概念及其应用。

Chapter 2 proposes the concept of attenuation ellipsoid.

在第2章首先利用散射参数提出衰减椭球的概念，并讨论其性质。

A new technique is presented for maximizing the band-edge selectivity of elliptic filters, and then the equal ripple parameter of the quasi-elliptic function can be calculated when the band-edge selectivities of the elliptic function and quasi-elliptic function are the same.

提出了标准椭圆函数的边带优化方法，在此基础上使标准椭圆函数与修正后的准椭圆函数在边带上的衰减相等，得到准椭圆函数的等波纹系数。

It indicates that the extinction capability and concentration of bubble solvent can seriously influence the light absorption in some wavebands, bubbles can change the direction of light propagation and reduce the energy density, the transmission intensity and light energy decrease rapidly with the increase of times that the light passes through the bubbles, and bubbles′ floating nature can cause the uncertainty in the emergent ray direction and energy distribution.

结果显示：泡沫溶液的溶质/溶剂的消光能力、浓度等对特定波段光波的吸收产生关键影响；泡沫通过改变光线的传播方向，大大分散出射光线的能量密度；随着光线穿过泡沫液膜界面的次数增多，透射光强迅速衰减，透射能量迅速下降；其漂浮运动还将导致出射光线方向和能量密度分布的不确定性。

By the optical matrix, the effects have been analyzed quantitativelly, and point out that equivalent length of optical path is the different concept from optical distance.

通过变角度衰减片的光学传播矩阵定量地分析了这些影响，特别提到光路的等效长度与光程是不同的概念，需要分别考虑。

Looks from the system communication effect, this system has a higher antijamming, the anti-signal weakens ability, the system can achieve a farther transmitting range, simultaneously because the communications system essential part SC1128 (Spread Spectrum / solution expand chip) is specially designed according to the domestic low power line characteristic, the performance price is high, these are all advantageous to the system's promotion.

从系统的通信效果来看，本系统有较高的抗干扰，抗信号衰减的能力，系统可达到较远的传输距离，同时由于通信系统的关键部件SC1128是根据国内低压电力线特性而专门设计的，性价比高，这些都有利于系统在做进一步的完善后在国内自动抄表行业内的推广。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。