因此，控制纳米晶粒在烧结过程中的长大就成为制备块状纳米材料的关键。

So, how to control the growing of the crystals in the process of sintering becomes the key to manufacturing bulk nanomaterials.

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指出要成功制备纳米硬质合金，关键在于控制烧结过程中WC晶粒的长大，探索新的快速烧结方法。

New fast sintering techniques should be employed because the key to obtaining nano-cemented carbide is to control the WC grain growth during sintering.

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有关研究表明在超细硬质合金中添加抑制剂可以有效地控制硬质合金中晶粒的长大。

Relational researches prove that appended inhibitors can prevent the growing of crystals in ultra fine cemented carbides effectively.

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