Introduce the preparation for metallographic specimen of thermo-spraying process coat and explain some technical questions.
对热喷涂层金相试样制备进行了介绍，并对一些技术问题给予提示。
A brief introduction to the preparation of metallographic specimen of NdFeB ingot or strip casting are given in this article.
文章介绍了钕铁硼铸块或速凝薄带的金相样品的制备方法。
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