Alternating current disinfecting hepatitis B virus on the surface of dental drill and handpiece: an experiment study.;
交流电消毒口腔科牙钻与弯机头乙肝病毒的实验研究
The Dynamic Analysis on Drilling System of ZY-200 Type Rotary Drilling Rig;
ZY-200型旋挖钻机钻挖系统动力学分析
The Structure Analysis and Welding Technology Research for the Mast of NR220 Rotary Drilling Rig;
NR220旋挖钻机桅杆结构分析及焊接工艺性研究
Simulation analysis of the lifting force of parallelogram cylinder of the parallelogram system of rotary drilling rig based on ADAMS
以ADAMS为平台的旋挖钻机变幅机构变幅油缸举升力仿真分析
A dentist drills a tooth to remove decayed material
牙医用牙钻钻牙以除去蛀蚀的部分。
I make a supreme effort and struggle out too .
我也一咬牙钻出了毛毯。
You are in the waiting room and this is the noise you hear through the door.
在牙科候诊室里听见牙钻磨牙的声音，让人痛苦不堪。
When I was a child, I was afraid of the dentist because of the big drill.
我小时候非常害怕牙医，因为牙医都有一把大牙钻。
A shaft on which a working tool is mounted, as in a dental drill.
心轴用于安装工具的蕊棒，如牙钻蕊棒
bridge of the bit
四牙轮钻头牙轮支架
The dentist drilled my tooth.
牙医在我牙上钻孔。
foot engine with electric motor
牙科脚踏电动二用钻机
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
cone type roller bearing rock bit
滚柱轴承锥形牙轮钻头
Blast hole tricone rock bits
GB/T13343-1992矿用三牙轮钻头
insert rock bit
镶硬合金齿牙轮钻头
Did he drill your tooth?
他有没有钻你的牙齿？
4.14 Drilling with cone (drag) bit in the section.
此段地层采用牙轮（刮刀）钻头钻进。
Rotary drilling machine replacing downhole drill to accomplish controllable blasting of slope
牙轮钻取代边坡钻完成边帮控制爆破
Comparative analysis of drilling characteristics of dia- mond bits and roller bits
金刚石钻头与牙轮钻头钻井特点对比分析
The dentist drilled the bad bits out of a tooth
牙医把牙齿上蛀坏的部分钻掉。
a high speed drill that dentists use to cut into teeth.
牙医用来打进牙齿的高速钻机。