"If you switch on a cellphone on board, and there's no network, it will gradually increase the power it's transmitting because it's trying to get hooked on a network which doesn't exist, " he said.

CNN: In-flight phone calls to become standard, say experts

The Chinese government said it will gradually increase the value of the yuan compared to the US dollar over the next several years.

FORBES: Matthews Asia Funds Heads To China's Minor Leagues

And there will certainly come a time, and it will increase gradually as the year goes on, where he engages in more campaign activity.

WHITEHOUSE: Press Briefing

Going forward, we expect it to increase gradually to around 22%, as the company believes that there is further scope for optimizing its supply chain and improving operational efficiency.

FORBES: Aeropostale Looks Like A $55 Stock

The recovery in the American economy, painfully slow though it is, should gradually increase US oil consumption.

FORBES: Petroleum Balance

It wants to ease the shock that would result and gradually phase in the price increase over several years.

FORBES: Putin's Ukraine Dispute Rages Over Gazprom Pricing