root bur

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

Objective:To evaluate the capability of the apical tissue of rat molar to grow tooth root and periodontal tissue.

目的:探讨大鼠磨牙牙根根端组织发育牙根和牙周组织的能力。

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。