In this paper, the multi-level wind velocity in the nocturnal steady state PBL is analysed, using the data of the 325 meter meteorological tower and acoustic sounder.
本文利用325米气象塔及声雷达探测资料分析了夜间平稳天气条件下行星边界层中风速出现多极值的现象。
2
The acoustic emission monitoring of the roof and floor pillars surrounding the stopes was done with YSS acoustic emis-sion meter.
用YSS声发射仪对采场四周的顶底柱进行声发射监测。
3
The ultrasonic meter is configured to determine diagnostic data based on acoustic signals transmitted between the first transducer pair.