natural diamond core bit的意思|示意
美 / ˈnætʃərəl ˈdaiəmənd kɔ: bit /
英 / ˈnætʃərəl ˈdaɪəmənd kɔr bɪt /
天然金刚石取心 钻头
natural diamond core bit相关例句
The bit is usually a drag bit fitted with either PDC or natural diamond cutting structures, but the core bit is unusual in that it has a hole in its center.
钻头通常属于刮刀型，装备有PDC或者天然金刚石切削齿，但取芯钻头的特别之处在于钻头中心有一孔。