Following discussions on the principle of Doppler, the classification of the deformation, and analysis of signal spectrum, a continuous and rapid method for the measurement is presented.
通过对超声多普勒原理、路面变形的分类研究及测试信号谱分析的详细讨论和研究，给出了一种连续、快速检测沥青路面变形情况的方法。
Relying on the rapid development of today's networks, to sharp-sighted analysis of forward-looking market, continuous development and expansion of their own.
依托当今网络的迅猛发展，以敏锐，前瞻的目光分析市场，不断的的发展壮大自己。
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