ASTM A889/A889M-03 Standard Test Method for Alternating-Current Magnetic Properties of Materials at
标准简介
ASTM A889/A889M-03 Standard Test Method for Alternating-Current Magnetic Properties of Materials at Low Inductions Using the Wattmeter-Varmeter-Ammeter-Voltmeter Method and 25-cm (250-mm) Epstein Frame
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