After the simulation of the well surrounded by two and three stratums, the two-dimensional spectrum is calculated while the curve of wave slowness changes with the frequency is drawn.
分别计算了井外有两层、三层介质时井内声波传播的二维谱，绘制了时差随频率的变化曲线。
Method of two and Three dimensional holo spectrum plotted by MATLAB software is set forth.
并阐述了利用MAT - LAB软件绘制二维全息谱图和三维全息谱图的方法。
The analysis and research on the statistical method for two-dimensional random load spectrum of vehicle transmission are presented in this paper.
本文对传动系多工况二维随机载荷谱的统计方法进行了分析与研究。
In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
Methods Static isometric loading of the biceps and low back muscle was performed in 14 subjects, using FFT power spectrum and its two dimensional mapping to analyze SEMG signals from these muscles.
方法14名受试者分别参加肱二头肌和腰部脊竖肌等长运动负荷实验，取表面肌电信号进行FF T功率谱及其功率谱二维地形图分析。
Results the differences of various diseased blood vessels are remarkable among the two-dimensional ultrasonic images, the color doppler? Ow images and frequency spectrum doppler.
结果病变血管在二维超声图像，彩色多普勒血流显像以及频谱多普勒方面差异均有显著性。
In this paper, we analyze the BER performance of pilot symbol assisted two-dimensional spread spectrum systems with coherent demodulation in multi-path fading channels.
在多径衰落信道中，本文分析了导引辅助的二维扩频相干解调的误码率性能。
In general, two dimensional dynamic NMR spectrum can be obtained by means of three-pulses experiment.
二维动态nmr谱通常可由三脉冲实验得到。
In general, two dimensional dynamic NMR spectrum can be obtained by means of three-pulses experiment.
二维动态nmr谱通常可由三脉冲实验得到。
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