1) attenuation rate
衰减率
1.
55mg/L,the contents of chlorophyll a and chlorophyll b were both lower than the detection limit,with an attenuation rate of 100%;that of carotenoid decreased.
55mg/L时,微生物的叶绿素a、b含量均低于检测方法的最低限值,其衰减率为100%,类胡萝卜素衰减率为92。
2.
Researched influence of frequency on characteristic of electromagnetic wave transmission in tunnels, and analyzed characteristic of electromagnetic wave transmission in circular, arches and curved tunnels by method of metal wave guide, and gives approximate formulas of attenuation rate.
研究了频率对井下电磁波传输特性的影响,采用金属波导法分析了圆形、拱形及弯曲隧道中电磁波的传输特性并给出衰减率近似公式,得出主要结论:在圆形和拱形隧道中,频率越高,衰减率越小,越有利于电磁波的传播;在弯曲隧道中,频率越高,衰减率越大,不利于电磁波的传播;通过特性曲线与井下实验数据相比较得出在900MHz左右为井下无线通信系统传输信号最佳频段。
2) Decay rate
衰减率
1.
The results show that,the sustain of non-linear effect gains obvious advantages over the decay rate of waves since the change of stabili.
分析表明,平均流剖面稳定性改变使非线性作用的支持相对于衰减率有了明显的优势,于是流场中占大多数的长期受衰减率抑制的未增长起来的波能够急速增长,导致转捩的"breakdown"过程迅速完成。
2.
A suitable decay rate which is relevant to the situtation of poles from estimated to real x is important.
在设计观测器过程中，除了要求状态估计值ｘ渐近逼近真实值ｘ外，还希望两者间有一个合理衰减率，而这与观测器系统的极点位置密切相关。
3.
The global decay rate of solution for a class of wave equation with nonlinear second-order boundary conditions is further discussed by virtue of a comparison inequality and the energy perturbation method.
利用一个比较不等式和能量扰动法,对一类具有非线性二阶边界条件的波动方程整体解的衰减性做进一步研究,证明了解的衰减率和外力f(x,t)之间的关系。
3) attenuation
[英][ə,tenju'eiʃən] [美][ə,tɛnjʊ'eʃən]
衰减率
1.
Electromagnetic wave propagation attenuation change by wet tunnel wall;
隧道壁湿润引起电磁波衰减率变化的研究
2.
Expressions are solved to calculate the attenuation,and the attenuation of electromagnetic wave reduced by precipitation is showed in the way of graph.
分析了各种降水形式的影响,从理论上进行了推理计算,并且给出了衰减率计算的方法,最后以图的形式直观地展示了大气降水对电磁波传播的衰减。
3.
Influences of the material parameters on the phase velocities and attenuation of Rayleigh waves ar.
数值考察了表面透水和不透水两种情形下,饱和标准线性粘弹性多孔介质中材料参数对Rayleigh波相速度、衰减率等的影响。
4) attenuation ratio
衰减率
1.
The analysis of the experimental curves shows that ,the larger the size of the madia,the lower is its gamma-field and the higher its attenuation ratio;with the increasing temperatureof the media, the absorbent of gamma- ray and the attentuation ratio increase.
经试验的数据曲线分析表明，介质粒度越大，其γ场降低，衰减率高；而介质的湿度越大，介质对射线的吸收量增高，衰减率增高。
2.
Based on the relation between the attenuation ratio and the transmittance of the laser,the variation of the attenuation of 10.
6μm的激光为例,利用衰减率与透过率之间的关系,给出了平流雾及辐射雾中激光雾衰减随能见度、接收器视场角等的变化关系。
3.
The analytical expressions of the phase velocities,reflection coefficients and attenuation ratios for the non-homogeneous reflected longitudinal waves are obtained.
文章主要讨论了自由边界上平面横波的反射问题,得到了非均匀反射横波的波速、反射系数、衰减率等物理量的解析表达式。
5) decay rates
衰减率
1.
An estimate of decay rates for the inhomogeneous wave equation is given.
给出非齐次ｎ 维波动方程衰减率的一种估计式
2.
This paper is concerned with the decay rates of the solution to the strong planar rarefaction waves for scalar conservation laws with degenerate viscosity in several space dimensions.
本文主要研究高维空间中带有退化粘性的标量守恒律方程的光滑解的整体存在性，以及该解逼近强平面稀疏波的衰减率。
6) Decay rate η
η衰减率
补充资料：衰减率
分子式：
CAS号：
性质：入射光功率(Po)与透射光功率(P)之比。以10为底时的对数值。符号为D。D=lg(P0/P)=-lgT。T为透射率。如果入射光束经过系统时只发生透射和吸收,不发生反射或散射时,衰减率即相当于吸光度。
CAS号：
性质：入射光功率(Po)与透射光功率(P)之比。以10为底时的对数值。符号为D。D=lg(P0/P)=-lgT。T为透射率。如果入射光束经过系统时只发生透射和吸收,不发生反射或散射时,衰减率即相当于吸光度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条