Thus it is conceived that the bit can be developed by coupling with micro convex non-smooth material (diamond) and macro smooth pit, which may lead to the high efficiency and strong wear.
于是想到将微观凸包非光滑(金刚石)和宏观凹坑非光滑复合来设计钻头，如此可以实现高效耐磨的目的。
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