兑水 发表于 2009-9-8 11:18:26

ASTM A 697-2003 用伏特计、安培计和瓦特计法测定迭层铁...

A697/A697M-03 Standard Test Method for Alternating Current Magnetic Properties of Laminated Core Specimen Using Voltmeter-Ammeter-Wattmeter Methods
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