sonic speed

基本解释

When a high-speed train enters a tunnel, a compression wave is formed ahead of the train which propagates along the tunnel at a nearly sonic speed.
为了降低噪声的影响，对高速列车穿越带有竖井的隧道时产生的压缩波进行了三维粘性流场数值模拟。
The basic principle of the subsurface sonic tomography technique is described and the abnormal characteristic of sonic speed tomography is also discussed for a ball model.
本文简述了地下声波法的工作原理，并从球体异常出发，阐述了建立速度层析成像后的异常特征。
This system adopts the USB2.0 interface to obtain the real time and high speed sonic data with DMA technique.
采用USB2.0作为与主机的数据接口，通过DMA进行高效数据传输，在数据采集的同时能够实现程控声波发射。

The multi-tasking image-processing Venus Engine enables beautiful image recording and Sonic Speed AF (Auto Focus) combined with a quick camera start-up time to offer a high-speed response time to ensure users can capture even the most spur-of-the-moment photo opportunities.
ENGADGET: Panasonic's Lumix line gets a lot more crowded
There have been dark hints from people at Boeing that manufacturing work on the Sonic Cruiser, a high-speed airliner, will move out of the state unless traffic between Boeing's factories around Seattle gets unclogged.
ECONOMIST: Citizens' initiatives
Any plane that flies past the speed of sound creates a sonic boom, which often results in a major noise disturbance over close-by areas.
FORBES: Magazine Article