◎ 复合声级计2级条(tiao)件(jian)
◎ 集(ji)成式结构设(she)计,易(yi)于(yu)配置加(jia)固(gu)
◎ 需不需要联(lian)机,需先时(shi)(shi)时(shi)(shi)随地实时(shi)(shi)交通彰♕显(xian)躁(zao)音值