500快餐4小时真的假的

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什么是熱退磁現象

2020-11-26 19:35:36 asycn 17

熱退磁現象是因為對金屬進行著磁后,由于環境或周圍溫度升高時造成金屬磁量減少的現象。一般首先對著磁資材進行檢測后在進行使用,以便在完成品制作成后因運輸等原因造成溫升過高磁量減少從而著磁不良。

500快餐4小时真的假的

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