波速
文章摘要信息 关键词 : 探地雷达;波速;Levenberg-Marquardt算法;双曲线拟合;介电常数 [gap=1228]Keywords : ground penetrating radar;velocity;levenberg Marquardt algorithm;hyperbolic fitting;permittivity
持续的低流速波。
It is shown that impulse direction has a great effect on velocity wave.脉冲作用方向对脉冲作用点的速度波影响很大。
A velocity wave and a stress wave resulting from the stress variation are transmitted downward along the drill string.悬点的应力变化产生速度波和应力波沿钻杆向下传递。