The aether, as then postulated, was considered by many scientists to be the medium through which waves of light travelled.
那时，以太被许多科学家看作光传播的介质。
At the time, people believed that light waves, just as sound waves, ocean waves or shock waves, had to travel through a medium.
当时，人们认为，光波就像声波、海浪波或冲击波一样，它们的运行必须穿过介质。
Sound waves need a medium through which to travel, whether it's air, water, glass or metal.
声波的传播需要媒介，这种媒介可以是空气、水、玻璃或金属。
The atmosphere is a medium for sound waves.
大气是声波的传播介质。
This radio set can receive on short, medium and long waves.
这台收音机可以接收短波、中波和长波。
The surface wave is treated as interference wave in oil seismic prospecting, however, the Rayleigh wave, like the refraction and reflection waves, contains the information of underground medium.
在石油地震勘探中，面波一般是作为干扰波处理的，然而，瑞利面波也和折射波、反射波一样包含有地下介质的信息。
Propagation characteristics of longitudinal ultrasonic guided waves of steel rod embedded in infinite medium are studied in theory.
从理论上分析高频纵向超声导波在埋于无限大介质中钢杆传播的特性。
This paper derives an energy attenuation formula of seismic waves in the wavelet-scale domain from the wavelet theory and seismic wave propagation equation in anelastic medium.
本文从小波理论出发，结合地震波在黏弹性介质中的传播方程，推导出小波尺度域地震波能量衰减公式。
Propagation and evolution of linear waves in the self-gravitational medium are discussed in a comparatively general way.
本文以较一般的方式讨论了自引力介质中线性波的传播和演化。
There are two methods, analytical and graphical, in calculating the interaction of detonation waves with a non-reactive medium.
爆轰波与惰性介质相互作用的计算。可以用解析解和作图法求解。
A discussion is made on the coupling intensity between the compressional and shear waves and the amplitude attenuation resulting from the inhomogeneity of the medium.
通过数值结果对纵、横波之间的耦合程度以及介质的不均匀性对波的衰减作用进行了讨论。
This paper gives a method for analysing and computing the response of a multiple -layered cylindrical structure to impulsive waves in an infinite elastic medium.
本文给出了一种分析计算无限弹性介质中多层园柱结构对脉冲波的响应的方法。
The second example is the asymptotic periodic solution and the dispersion relation of weakly non-linear waves in a self-gravitating medium.
第二个实例是自引力介质中弱非线性波的渐近周期解及色散关系。
But in regions of lower resistivity HFEM results have been disappointing due to severe attenuation of source waves by the medium.
在低阻区，高频电磁方法的结果一直是令人失望的，其原因是这种介质使信号严重衰减。
Anyone can broadcast electromagnetic waves and no one really owns the transmission medium.
任何人都能广播电磁波，实际上没有人拥有这种传播介质。
Studying the propagation of nonsinusoidal wave in a dissipative medium is theoretically important for analyzing the problems on absorbed pulse waves in hidden techniques.
研究非正弦电磁波在损耗介质中传播的理论，对分析隐身技术中脉冲波的吸收等问题有理论指导意义。
By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals.
它是利用超声换能器的振动产生的超声波与弹性介质相互作用，从而携带大量有关材料性能的信息，这种信息以超声回波信号的形式被接收到。
In this paper, the plane and anti-plane problems of the diffraction of elastic waves by a cavity filled with another medium are discussed. The method calculation, of the wave field is given in detail.
本文讨论了填充介质腔为弹性波绕射的平面及反平面问题，详细地给出了波场的计算方法。
By interaction between ultrasonic waves and elastic medium, it carries much information of material, which is received in the form of ultrasonic echo signals.
它是利用超声换能器的振动产生的超声波与弹性介质相互作用，从而携带了有关材料组织性能的信息，这种信息随同超声回波信号被接收到。
Cadion gives two distinct reduction waves in the medium of 0.32m NaOH solution.
镉试剂在0.32M氢氧化钠溶液中有清晰的还原波，峰电位在—o。
Finally, the problems of propagation of elastic waves in a porous, saturated elastic (or anelastic) medium are discussed.
文未对湿孔隙弹性介质及湿孔隙粘滞弹性介质中的弹性波传播问题作了讨论。
And under the condition of propagating against weak wind, most of medium-scale gravity waves can reach observation height.
而在弱逆风作用下，大部分中尺度范围重力波都能够传播到观测高度。
It is pointed out that there is a close relation between the lateral variation of elastic waves velocities that propagate in the crust or upper mantle and the lateral regime in the same medium.
指出地壳和上地幔弹性波速的横向变化，与介质温度状态的横向差异存在密切关系。
Objective:To observe the effect of fixative, mounting medium, temperature and sterilized method to three waves quantum dots(QDs)served as a mark on the peritoneal macrophages and normal skin of mice.
结论：不同波长量子点标记小鼠腹腔巨噬细胞和皮肤组织的效能受固定剂、封片剂、温度和除灭菌方式的影响。
The inversion result, the distribution of Surface waves Q value for South China in 1993 and 1996 will offer some background information about medium - long term earthquake prediction.
将改进后的程序应用于1993年和1996年华南地区地壳的面波品质因子——Q值的实际反演，为中长期地震预报和地震趋势分析提供背景资料。
The reflection of electromagnetic waves from inhomogeneous medium with a special profile is investigated.
本文研究电磁波在一类特殊非均匀媒质中的反射问题。
The propagation of seismic waves is affected by the earth medium.
地震波的传播是受地球介质影响的。
The pick-up arrangement, mathematical model of impact-point positioning, medium for the transmission of earthquake waves, and the general system block-diagram etc. are described.
讨论的着重点为传感器布阵、弹着点定位的数学模型、地震波的传播介质及系统总体框图等方面。
The pick-up arrangement, mathematical model of impact-point positioning, medium for the transmission of earthquake waves, and the general system block-diagram etc. are described.
讨论的着重点为传感器布阵、弹着点定位的数学模型、地震波的传播介质及系统总体框图等方面。
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