N9320B 射频频谱分析仪，9 kHz 至 3 GHz 图片

p1Src=//y2.yzimgs.com/uploads/346346/2021312-17254354.jpg?watermark/2/text/5Lic6I6e5biC5ZCv6Iiq55S15a2Q56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast"