The monochrometer is adjusted to wave length of O, and the time of arriving for shock wave is measured by gauge.Thecritical condition of shock ignition for epoxypropane is determined.

• 把单色谱仪调至氧原子波长处，并利用压力传感器测得冲击波到达样品的时间便可确定环氧丙烷冲击点火延迟时间。