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Explosives and Explosive Ordnance Disposal
containing
晶石
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石英晶体内的参考轴
X-axis
聚晶金刚石钻头
以聚晶金刚石或聚晶金刚石复合片作为切削刃具的钻头。由于聚晶金刚石的耐磨性比硬质合金高1polycrystalline2个数量级,比天然金刚石的耐磨性还要高,扩大了切削破碎的使用范围,在石油钻井、地质勘探的岩心钻中得到推广应用,有着十分广阔的前景
polycrystalline diamond bit
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