The bit breaker must match the bit profile or the bit may be ruined before ever being used.

钻头装卸器必须与钻头的剖面想匹配，否则，钻头可能会在使用前就被损害。

youdao

The design of bit profile is an important part of PDC bit design, and it is always made by designers on the basis of their experience.

冠部设计是PDC钻头总体设计的一个重要组成部分，过去一直是凭经验设计，缺乏理论依据，随意性较大。

youdao

On the other hand, it does require a bit more work and knowledge from the profile author.

从另一方面来看，对概要文件的创作者来说的确需要更多的工作和知识。

youdao

It's just that ours are a bit more high profile.

BBC: St Helens skipper Keiron Cunningham out to end on high

He's had a cult following and healthy overseas readership but was little-known in the U.S. until "Savages" raised his profile a bit in 2010.

WSJ: Salma Hayek, John Travolta and Benicio Del Toro in Oliver Stone's Savages

The majority of maps features that matter are all here: traffic, turn-by-turn navigation, transit directions, walking directions, satellite view, street view, indoor photos, Zagat restaurant reviews, and a bit of integration with your Google profile.

FORBES: Links 13 Dec: Five * Rating, 7,125 reviews, Google Maps Is Back On iOS