The pressure recovery system is an important part of Chemical Oxygen-Iodine Laser(COIL).

压力恢复系统是氧碘化学激光器的重要组成部分。

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Pressure recovery system is one of the key techniques for the high energy chemical lasers .

压力恢复系统是高能化学激光器的关键技术之一。

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Pressure recovery system(PRS) is one of the key techniques for the high energy chemical lasers(HECL).

压力恢复系统（PRS）是高能化学激光器的关键技术之一。

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We expect margins to be under pressure due to slower economic recovery and intensifying competition.

FORBES: AT&T Profitability Squeezed By Competitors

But the race became a flashpoint in the recovery, and pressure to cancel the race built throughout Friday, with likely mayoral candidates year calling for its cancellation, as well as several others from ravaged areas in Queens and Staten Island.

WSJ: Marathon Hits Wall Amid Criticism

The U.S. dollar index was firmer Tuesday on a mild recovery from recent selling pressure.

FORBES: Comex Gold Ends Weaker On Profit-Taking, Corrective Technical Pullback