The numerical results also show that the first sonicpoint position moves away from the throat to the outlet of the micro nozzle with decrease of the throat width.
数值结果表明：在扩张比和进出口压力相同的条件下，微喷管出口马赫数随着微喷管尺度的减小而减小。
2
According to the phenomenon of sonic transmission caused by pipeline leakage a detecting system of pipeline leakage and the location of the leakage point is structured.
根据管道泄漏时产生声发射信号的现象，构建了一种管道泄漏与泄漏点定位的检测系统。
3
The transparent transmission and negotiation or configuration options are sonic sophisticated issues in Point-to-Point Protocol(PPP) used by WAN routers.