rock bit

常见例句

Water jet flow is one of the decisive factors for drilling rate during rock bit drilling.
在牙轮钻头的钻进中，水射流是钻进速度快慢的决定因素之一。
With 20 rock bits which used in the field, bearings' surface metallography, rigidity, and the main factors influence the life of the rock bit journal bearings were studied.
收集了近几年20只现场失效牙轮钻头，对其轴承表面金相组织和硬度以及影响牙轮钻头滑动轴承失效的主要因素进行了分析。
On the basis of the interaction model between formation and rock bit, a lateral vibration dynamic model of the rock bit was established under the interaction between drilling string and rocks.
在建立牙轮钻头与井底岩石互作用模型的基础之上，建立了基于钻柱和岩石互作用下的牙轮钻头横向振动动力学模型。

Nor does much of his music. It is a little bit country, a little bit rock and roll.
The Navajos have their own red-rock tribal park, called Monument Valley, that's every bit as spectacular as U.S.national parks elsewhere in the Southwest.

One's a little country (Ginger Hendrix), one's a little bit rock 'n' roll (Elizabeth Street).
NPR: Zooglobble Favorite Kids' Albums of 2006
He looked every bit the rock star wearing sunglasses as he walked through a throng of Cardinals and race fans who had waited patiently outside the barn.
NPR: Louisville Coach Chasing Derby Win As A Co-Owner
But for shale gas, once the drill reaches the shale rock underground, the drill bit is turned horizontally to bore a well that stretches through the natural gas producing shale.
FORBES: China Closer To Joining Shale Gas Fracking Craze