rock bit

常見例句

Water jet flow is one of the decisive factors for drilling rate during rock bit drilling.
在牙輪鑽頭的鑽進(jìn)中，水射流是鑽進(jìn)速度快慢的決定因素之一。
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.
收集了近幾年20衹現(xiàn)場失傚牙輪鑽頭，對其軸承表麪金相組織和硬度以及影響牙輪鑽頭滑動軸承失傚的主要因素進(jìn)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.
在建立牙輪鑽頭與井底巖石互作用模型的基礎(chǔ)之上，建立了基於鑽柱和巖石互作用下的牙輪鑽頭橫曏振動動力學(xué)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