The result shows that there are two peak values, the first one is explosion wave pressure; the second is caused by the hot gas, which is heated by the subsequent flame.
研究结果表明，管内瓦斯爆炸过程中所产生的爆炸波有两个峰值，第一峰值为爆炸波压力，第二峰值压力为火焰到达后加热气体升压所致。
When the shock wave is formed, the propagation velocity of the two peak values of explosion wave, become nearer and nearer, that is reciprocally authenticated with the explosion propagation theory.
形成激波后，爆炸波两峰值往下游传播越来越靠近，测试结果与爆炸传播理论是相互验证的。
RESULTS There are two obvious peak values of bacteria content in the process of spinal surgery operating, at beginning of operating and operating finished.
结果脊柱手术过程中细菌含量具有两个明显的峰值，分别是手术开始时和手术结束后。
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