The formation of secondary muzzle flash is closely related to reducing gases in combustion products.

枪炮二次焰的形成与燃烧产物中还原性气体息息相关。

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In this paper, several methods for measuring the muzzle flash are briefly summarized, and problems existing in using these methods are systematically analysed.

该文简述了常用枪口火焰测量的几种方法，对各方法存在的问题作了系统分析。

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Abdul Aziz, 33, told CNN's iReport that he saw a gun's muzzle flash at Sunday's parade but couldn't see who the shooter was.

CNN: Police name suspect in New Orleans parade shooting

He had rigged the .50-caliber machine gun on the turret with a propane system that generates the noise and muzzle flash of gunfire, without the bullets.

WSJ: These Vehicles Are Tons of Fun, and Good for Thwarting Road Rage