Also referred to as the starting sector of the partition.

这也被说成是分区的开始扇区。

youdao

On the top sector they were gonna be starting when they came on the campus.

一到学校,他们就开始了这个过程。

麻省理工公开课 - 媒体、教育、市场课程节选

The EU, by contrast, is methodically regulating sector by sector, starting with the creation of EU-wide supervisors.

ECONOMIST: Lots of rules, but not all good ones

But since there is no assurance of an agreement, people in the defense sector are starting to get edgy as the clock ticks down.

FORBES: Budget Uncertainties Provoke Panic In Defense Sector

Some stocks in the oil sector are starting to act better.

FORBES: Stocks Pop Higher As Greece May Not Vote