然而，纳米硬质合金粉末烧结过程中WC晶粒的快速长大行为使得难于获得真正意义上的纳米晶硬质合金块体材料。
However, the rapid intrinsic growth characteristic of nanometer WC grain during sintering process lead nano-grained cemented carbides with excellent mechanical performances is not acquired.
然而，纳米硬质合金粉末烧结过程中WC晶粒的快速长大行为使得难于获得真正意义上的纳米晶硬质合金块体材料。
However, the rapid intrinsic growth characteristic of nanometer WC grain during sintering process lead nano-grained cemented carbides with excellent mechanical performances is not acquired.
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