The utility model relates to a non-contact on-line monitor for air leakage and negative pressure fault in a high-voltage vacuum switch.

本实用新型是一种非接触式的在线监测高压真空开关的漏气及负压故障的装置。

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As a result, one side of the fault area lifts, causing the pressure that has been building up inside to be released.

VOA: special.2009.07.07

He may have saved one break point on his serve but the pressure seemed to mount as he dished up a double-fault to lose the game.

BBC: Daniel Nestor & Nenad Zimonjic win ATP title in London

Former City defender Sylvain Distin headed Everton's equaliser from Mikel Arteta's free-kick after 65 minutes with goalkeeper Joe Hart at fault - and as Roberto Mancini's men rocked under increasing pressure, Leon Osman rose spectacularly to beat City captain Vincent Kompany and head the winner seven minutes later.

BBC: Everton 2-1 Manchester City

At 1-1, Murray, bowing to relentless pressure from the other end, threw in two errors off the ground followed by a double fault to concede the break.

BBC: Brutal Nadal sweeps aside Murray