研究了塑料管式安全鞭炮的制备原理和制备工艺，分析了APC引燃剂的主要性能。
The preparation principle and techniques of plastics-tubing safety fireworks are introduced, and the main characteristics of APC is tested.
街道上安全部队戒备森严，确保传统节日火祭不会被反对派所利用。伊朗人通常以跳跃篝火、燃放鞭炮的方式来庆祝这一节日。
Security forces flooded the streets to ensure that a traditional fire festival, which Iranians celebrate by jumping over bonfires and letting off crackers, would not be co-opted by the opposition.
现在很多城市都禁放烟花炮竹，因为不安全，尤其是小孩放鞭炮更加危险。
Now people in some cities are not allowed to set off firecrackers or fireworks because it's not safe to do that, especially for children.
本发明具体涉及一种安全彩光鞭炮烟花生产技术及工艺。
The invention relates to a safe colour-light firecrackers manufacturing technique and technology thereof.
本发明具体涉及一种安全彩光鞭炮烟花生产技术及工艺。
The invention relates to a safe colour-light firecrackers manufacturing technique and technology thereof.
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