Oil production from Daqing peaked at about 1.1m barrels per day (b/d) in 1997.

大庆的石油产量在1997年达到峰值——每天110万桶（b/d）。

youdao

B: 30 dollars per dozen.

每打30美元。

youdao

The cost of an unplanned outage of over 2 hours but less than one day is b thousand dollars per hour, etc.

一个超过 2 小时但是少于 1天的未计划中断的花费是 b千美元每小时等。

youdao

So for b 2, which is a single bond, that's 289 kilojoules per mole to break it, and it takes us more energy to break this double bond for carbon, which is 599 kilojoules per mole.

对于B2，它是单键，需要289千焦每摩尔来打破它，而对于碳双键,打破它要更多的能量，等于599千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

For example, when the B-1A program was restarted to produce the B-1B, the per unit cost of the B-1B was three-times higher than the B-1A. Importantly, the B-1B was a modification (albeit a significant one) of the A-model and a gap of just 18 months occurred in the production line.

CENTERFORSECURITYPOLICY: Center For Security Policy

Typically, their A-class stock entitles owners to one vote per share while B-class bestows ten votes.

FORBES: Magazine Article

The G standard has a faster maximum data transmission speed--54 megabits per second--than the B standard, which topped out at 10 MB per second.

FORBES: Magazine Article