By using one-dimension FDTD method we simulates the decay of double exponential pulse through the soil media, and its refractive time-domain wave shape is discussed in detail.
用一维FDTD方法模拟了双指数脉冲在单层岩土介质中的衰减，并对电磁波在岩土层中的穿透进行了详细的讨论。
We accordingly propose to take the marginal decay curve (whose function is simple) as a criterion to check if an observed pulse could be taken as a candidate suffered from the Doppler effect.
于是我们提出把极限衰减曲线作为检验观测脉冲是否是多普勒效应作用下的结果的一个标准。
Add the workpiece fixed in the coil, coil discharge at the moment have a damping pulse magnetic field decay, so that the loss of magnetic parts.
工件放入线圈中不动，线圈在放电瞬间产生脉冲阻尼衰减磁场，使工件失去磁性。
The sample circuit samples an output of the decay circuit at a sample time after the decay circuit receives the pulse for the most significant digit.
采样电路在衰减电路接收到用于最高有效数字的脉冲之后的采样时间对衰减电路的输出进行采样。
Each pulse generates a response in the decay circuit that decays over time according to a known decay response.
每个脉冲在衰减电路中生成响应，其根据已知的衰减响应而随着时间衰减。
The controller controls the timing of the pulses output by the pulse generator such that the period of each pulse relates to a predetermined decay amount.
控制器控制脉冲发生器所输出的脉冲的定时，以使得每个脉冲的周期与预定衰减量相关。
An instrument for measuring ultrasonic attenuation by means of comparing the ultrasonic pulse echo with a calibrated exponential decay wave-form is described.
本装置用超声脉冲回波与定标指数波形比较的方法测量超声衰减。
The detailed analysis of the slow-decay effect of pulse propagation is presented in this paper.
本文对脉冲传播慢衰减特性进行了详尽分析。
The detailed analysis of the slow-decay effect of pulse propagation is presented in this paper.
本文对脉冲传播慢衰减特性进行了详尽分析。
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