Aim-TTi PSA6005USC频谱分析仪 ¥23500.00 APC BACK-UPS CS500 BK500EI UPS不间断电源300W ¥1850.00 APC BACK-UPS CS 650 BK650EI UPS不间断电源400W 50-60hz ¥2100.00 Casella Cel 声级校准器 CEL-120/2 ¥2000.00 勤发Chinfa DRAN120-24A PW721导轨电源 输出24V5A120W ¥700.00 勤发 CHINFA DRA240-24A导轨电源 输出24V10A240W ¥980.00