... full-hole rock bit 全断面无岩心钻头 center-hole bit 带中心水眼的钻头 side-hole bit 侧孔钻头 ...
基于44个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
youdao
应用推荐
模块上移
模块下移
不移动