The experimental and analytical results show that the capability of scavenging the bottom-hole increases continuously as the ratio between diameters of nozzles and their number decrease.

实验和分析结果表明，随着喷咀直径比值的减小和喷咀数量的减少，井底净化能力不断提高。

youdao

The number of poor men is on the decrease as the economy is growing.

随着经济发展，贫困人口数量正在减少。

youdao

The destruction of coral through land use activities would cause a decrease in the number of predators that feed on Acanthaster larvae.

通过土地利用活动对珊瑚的破坏会导致以棘星幼虫为食的捕食者数量减少。

youdao

She says one possibility is a decrease in the number of school nurses during the period they studied.

VOA: special.2009.08.06

The return, of course, in any given time period is the percentage increase in the portfolio; or, it could be a negative number, it could be a decrease.

当然了，收益率是一定时间内,投资组合的增长率;,也可能是一个负数，表示负增长。

耶鲁公开课 - 金融市场课程节选

The Millennium Development Goals for two thousand fifteen call for a fifty percent decrease in the number of people without safe drinking water and basic sanitation.

VOA: special.2010.04.05

There are currently around 240 CCGs but that number may decrease.

BBC: NHS changes: The picture now

Makowsky from Townson University and Thomas Stratmann from George Mason University argue that the increase in the number of traffic tickets leads to a decrease in the number of accidents.

FORBES: It's Not Your Imagination. Recessions Do Lead to More Traffic Tickets

Roughly half of the allowances on the market will be auctioned and their number will also decrease slowly until 2020.

WSJ: Europe's Carbon Market Trips on a New Proposal