https://img20.360buyimg.com/vc/jfs/t1/105334/39/22632/128462/62074084E8b36e860/1e264345ac9bda04.jpg
https://image3.vipmro.net/goodsImg/0!450450.jpg
https://img20.360buyimg.com/vc/jfs/t1/167091/24/41366/52617/64effb3cF6f77b28c/aa2823880bb2b42a.png
https://img20.360buyimg.com/vc/jfs/t1/108970/14/36963/26362/64e816dcF5718bbe0/a2a0b3c4caff25b7.jpg
https://img20.360buyimg.com/vc/jfs/t1/143688/40/39168/26349/64f6e279Fb68705ae/da5dd2a97753e187.jpg
精度:±1dB
https://img20.360buyimg.com/vc/jfs/t1/173391/31/45129/14529/6630b335F29b3b2a1/63a56299ff77a38b.jpg
https://img20.360buyimg.com/vc/jfs/t1/173391/31/45129/14529/6630b335F29b3b2a1/63a56299ff77a38b.jpg
https://img20.360buyimg.com/vc/jfs/t1/174798/21/28063/245973/62074080Ee51e39bf/e5c9bc47bcc48377.jpg