Iron on marble. It would echo off the vaulted ceilings.

用铁家伙敲大理石，一定会在这圆拱屋顶下产生很大的回响。

The further off this solid obstruction, the longer time will elapse for the return of the echo.

固体障碍物越远，回声返回所用时间就越长。

The sound waves from these cries bounce off objects and echo back to the bat's ears.

从这些叫声中传出的声波，被物体弹回，回声传到蝙蝠的耳里。

At that time, I have forgotten what is not said, but it is certainly echo the black joke everyone said, laughing off or expressed support.

我已忘记了当时有没有说过甚么话，但肯定是附和了大伙说的黑色笑话，笑过或表示过认同。

The further off this solid obstruction, the longer time will elapse for the return of the echo.

固体障碍物越远。回声返回所用时间就越长。

The further off this solid obstruction the longer time will elapse for the return of the echo.

离开坚实的障碍物越远，回声返回所需的时间越长。

The characteristics of the test signals were analyzed and weak defect echo signals were successfully extracted by cut-off frequency technique.

分析了检测信号的特征，并采用截止频率法成功地提取了微弱的缺陷回波信号。

When the noise bounces off a fish or a rock, the dolphin hears the echo come back again.

当声音从鱼或岩石反弹回来时，海豚再次听到回声。

The average power of both true skin and deception echo is estimated recursively to calculate the detection probabilities which are used in 2D assignment and RGPO breaking-off judgment.

用一个递归滤波器估计回波平均功率，并计算真实回波和欺骗回波的检测概率，用于相关计算和欺骗终止判断。

The further off this solid obstruction , the longer time will elasp for the return of echo .

这种障碍物越厚实，回升持续的时间就越长。

In addition, the radiofrequency echo data stored during us were exported from the scanner and used for off-line strain image reconstruction.

另外，超声检查过程中，自探头输出射频回声数据积分和非在线弹性影像重建。