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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The explosion cause of 20 steel tube with different diameters on the bottom of ammonia synthesis tower was analyzed.

分析了氨合成塔底部副线2 0钢异径管爆破的原因。

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An idea to the explosion cause is proposed through the analysis in this paper. The quality problem of inorganic glass is considered as the accident cause.

本文通过分析对炸裂原因提出了看法，认为事故的原因可能是无机玻璃的质量问题。

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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.

FORBES: Disaster Of The Day: Petrobras

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.

CNN: Brazilian air force says debris was not from Air France crash

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

BBC: Third man charged over Buxton 'bomb alert'