衰减的

Both of the developed ABCs verified by examples can be used to truncate FDTD lattices of lossy media.

通过在Gedney PML中引入各向同性的复介电常数和复磁导率，并给张量介电常数、张量磁导率增加衰减因子。

However, it is not trivially easy to use this property for the attenuation of the detected surface-waves

然而，利用这种性质来衰减观测的面波并非十分容易。

A brief review is given in this paper for sound attenuation in turbid water .

对混浊水声衰减作了简要的综述。

The molecular weight of four kinds of UF resins by different process was determined by means of chemical analysis.

本文采用化学方法对四种工艺条件下合成的脲醛树脂进行相关分子含量测定，结合实验结果和合成工艺作了结构分析，并对比分析了衰减全反射红外光谱图。

Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.

目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。

Ultrasonic wave pulse technique was used to investigate the velocity of sound and attenuation of the damaged samples PBXN-S.

采用超声探伤仪对损伤材料PBXN-5的声速和声衰减进行了测量。

It has a lot of falloff wide-open, too.

它有一个大的衰减很多开放了。

Relaxation—Rate of reduction of stress in a m aterial due to creep. An altern ate term is

松弛—材料由于蠕变而产生的应力衰减率，另一个替代术语是应力松弛。

The upper crust of the Altun orogenic belt has a high average Q value (about 500). It is likely caused by shallow depth of crystalline basement, outcrop of basement rocks, and slow attenuation of seismic wave.

阿尔金造山带上地壳的平均Q值较高（约500），这可能由于结晶基底埋藏较浅，基岩出露，因此地震波在此处传播能量衰减较慢所致。

Cauline leaves sessile and auriculate, sagittate, or amplexicaul at base, rarely petiolate and attenuate, entire or dentate.

无柄的茎生叶和耳形，箭头形，或者抱茎在基部，很少具叶柄和衰减，整个或具牙齿。

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％。