A discussion of contradiction between people and land in the accelerating period of urbanization process 城市化進程進入加速期的人地矛盾問題探討
Accelerating noise was measured and analyzed for a passenger car , the inlet air noise of its engine has been found to be the main noise source during the car accelerating period 運用該技術對某汽車的加速噪聲進行測量和分析,發(fā)現(xiàn)發(fā)動機進氣噪聲是該車主要的加速噪聲源。