The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.

在水文水井中，气动潜孔锤钻进仍可发挥它高效率、高速度的作用。

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This is a miniature conveyer system driven by compressed air that transports small components in an endless cycle.

它是一个小型传送系统，由空气压缩机驱动，能将小型元件无休止的循环传送。

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Revenue increased 2% (3% excluding foreign exchange) for the third quarter, primarily driven by an increase in hotel and car rental revenues, partially offset by a reduction in air revenues.

收入同比增长了2%（扣除外汇汇率的影响，增长为3%），主要来自于酒店和租车收入的带动，部分抵消了机票收入的下降。

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This board of private citizens will oversee air traffic operations and budgets within the FAA, and will be expected to develop "tools and incentives" for the FAA bureaucracy to provide better, more customer-driven air traffic service.

CNN: graphic

"I'm loving it, " said Ms. Nawaz, a 39-year-old mother of three, as she was driven in an air-conditioned SUV between appearances in Lahore.

WSJ: Political Dynasties Shape Course of Pakistan Election

These problems are only proliferating as air cargo, driven by e-commerce and global outsourcing, grows at 6.4% a year, twice the rate of passenger travel.

FORBES: Grounded