direct impact
【建筑】冲击声隔音（结构隔声）、空气传声
impact sound insulation (structural sound insulation), airborne sound
暂无补充释义。
相关词条
impact load
impact
impact parameter
initiated by impact against bumper
missile disintegrating in flight or upon impact
drop forging【机】;impact forging【机】;punching【机】
impact test【力】