標題: ASTM A 697-2003 用伏特計、安培計和瓦特計法測定迭層鐵... [打印本頁] 作者: 兌水 時間: 2009-9-8 11:18 標題: ASTM A 697-2003 用伏特計、安培計和瓦特計法測定迭層鐵... A697/A697M-03 Standard Test Method for Alternating Current Magnetic Properties of Laminated Core Specimen Using Voltmeter-Ammeter-Wattmeter Methods