指针式噪音计声级计YF-20 YF-20 上海康登电气科技有限公司

p1Src=//y1.yzimgs.com/uploads/507859/201688-17241691.png&p2Src=//y2.yzimgs.com/uploads/507859/201688-1724638.png&p3Src=//y3.yzimgs.com/uploads/507859/201688-17249505.png"