Finally, at long ranges, the blast wave becomes essentially a sound wave and its velocity approaches ambient sound velocity.
最后,在很远的距离处,爆震波基本上就变成一种声波,其速度已接近周围的声速。
Circulated water allows you to utilize a watercourse, waterfall or fountain, adding ambient sound to your pond environment.
循环水可以利用水道,瀑布或喷泉,添加到您的环境声音池塘环境。
The high-speed trigger sets off the flashes when the ambient sound volume goes over a certain level.
高速触发器在环境音量超过特定的水平时启动闪光灯。
The sound waves collected from a larger area resonate inside it and we hear a greater amount than usual of the ambient sound around us, though in a jumbled up form.