艾维泰科IPS900B-30-30/60-15/15-60/80-10可编程直流电源1mV1mA 面议 ivytech艾维泰科IV3603/IV3605/IV3610/IV2010程控直流电源 面议 ivytech艾维泰科IV6003可编程直流电源IV6005 60V3A5A程控10mV1mA 面议 ivytech艾维泰科IV3603H可编程直流电源SENSE补偿IV3605H IV6003H 面议 IVYTECH艾维泰科AEL6000程控交流负载 7寸触摸屏 80-240V6000W 面议 GWinstek/固纬GPM-8213/GPM-8310/GPM-8310E交直流数字功率计310E 面议