大家都搜：
[地质]刮刀钻头
[机]切削型钻头
1、drag show───扮装秀；变装秀
2、drag behind───落在（某人或某事物）后面；（质量等）落后；落在后面
3、frictional drag───[力]摩擦阻力；摩擦拽力
4、drag out───把…拖[拉]出; （使）拖延; 挨
5、drag away───将…拉走，将…硬拖走
6、excrescence drag───PaiXie阻力
7、drag───v.拖拉，拖曳；硬拉硬拽；强迫；勉强；拖着（受伤的脚或腿）行走；缓慢而吃力地行进；拖累；拖沓；（用网或钩）在水中搜寻；（用鼠标）拖动；（某物）拖地；疲惫地去某处；抓；（船）拖动（锚）；（船）走锚；n.拖；拖累；阻碍；讨厌的事；吸入一口烟；（喜剧演员）男扮女装；（作用于行进中的飞行器或车辆的）空气阻力；（横穿城镇的）主干道；n.(Drag)（匈）德劳格（人名）
8、viscous drag───粘滞曳力；[流]粘性阻力
9、bit───adj.很小的；微不足道的；n.[计]比特（二进位制信息单位）；少量；马嚼子；辅币；老一套；一点，一块；adv.有点儿；相当；vt.咬（bite的过去式和过去分词）；vt.控制
1、long, heavy trains pose a burden to peacocks, the extravagant feathers of Anchiornis may have been a bit of a drag, literally.───孔雀来说，硕长且沉重的尾屏是个沉重的负担，而过多的羽毛可能也同样拖累了近鸟龙。
2、Surmounting Difficulties of Boring in Hard Plastic Clay Stratum Through Improving Drag Bit───通过改进刮刀钻头解决硬塑粘土层钻孔施工的难题
3、A rock drilling drag bit incorporating the cutting element and a method of cutting a material using the cutting element are also disclosed.───还公开了包括所述切削元件的凿岩刮刀钻头和使用所述切削元件来切削材料的方法。
4、tests for the effects of jet position on drag bit cutting process were described.───射流相对于刀具的四处不同位置对切割效能的影响进行了测试。
5、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。
1、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.