... 等噪声线 noise contour line 等噪度曲线 contour of equal perceived; equalnoisiness contour 回声曲线 echo curve ...
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echo signal curve 回音曲线
Throughthe application of reflection echo in concrete filling pile, the article analyzed different shape of reflection echo curve from theory to practice.
通过对应力波反射法在混凝土灌注桩检测上的应用效果，并且根据反射波曲线的不同形状，从理论上和施工中进行分析、判读。
The paper, through analyzing the forming of the amplitude spectrum of the echo, proposed a new method using quadratic curve fitting for it.
本文针对这种情况，对连续波雷达回波频谱幅度产生原因进行分析，提出了二次曲线拟合频谱幅度来估计加速度的方法。
Through the correlation radar parameter relative error and the echo intensity absolute error curve analysis, when the radar parameter antenna gain surpasses 0.
通过对相关雷达参数的相对误差和回波强度绝对误差曲线分析得出，雷达参数天线增益优于0。
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