The explosion cause a pressure wave which flows with high velocity through the relief pipe system.

爆炸引起压力波，压力波在压力放散系统中快速传播。

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Engineers discovered the problem during fueling, and worried that any excess hydrogen on the launch pad could cause an explosion during engine ignition.

VOA: standard.2009.03.15

Massey Energy Company did not send a representative to the hearing, saying it was not a formal investigation into the cause of the explosion.

VOA: standard.2010.04.27

There is also the possibility that this explosion could cause a 400-million-gallon spill that will be expensive to clean up.

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If true, that would rule out an in-flight explosion as the cause of the crash of Air France Flight 447, Defense Minister Nelson Jobim told reporters.

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In December Jonathan Taylor, 49, of Southwell Road, Norwich, admitted doing an act with intent to cause an explosion likely to endanger life.

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