HS5660B（高-低）精密脉冲声级计 上海临嘉科教仪器有限公司

p1Src=//y2.yzimgs.com/uploads/391770/201948-133942800.jpg?watermark/2/text/5LiK5rW35Li05ZiJ56eR5pWZ5Luq5Zmo5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast