Contact microphone recording of an Agilent Tri-Scroll vacuum pump made with the microphone on the front cover plate Agilent Tri-Scroll Vacuum Pump.wav 聲道:1 類型:wav Mechanical、Machinery、Contact、Pump、Vacuum、Mono、Industrial 機械、機械、聯繫、泵、真空、事情、產業 資料來源:freesound ( https://freesound.org )