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HP 4278A电容计二手 品牌: | 惠普 | HP HP4278A电容计Agilent4278A 测量速度:6.5ms/10ms/21ms 测量参数:C-D,Q,ESR,G C-D测量精度:0.07%,0.0005(1kHz,21ms) 0.05%,0.0002(1MHz,21ms)