back-wall echo

英美

背面回波：指声音或信号在撞击物体后反射回来的回声。

由被检件底面反射回来的波

... 底面回波 bottom echo 由被检件底面反射回来的波。同义词：背面回波 back reflection；back-wall echo 参考回波 control echo ...

At Echo Wall, visitors now offer cries instead of sacrifices, hoping to hear their voices bounce back to them.

在回音壁前，游客们不再献祭，而是大声喊叫，希望能听见自己的回声。

Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.

大家都知道，假如一个人在墙壁附近或是山腰里大声呼喊，就会产生一个回音。

Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.

大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。