After those six seconds, a shuttle? S twin solid rocket boosters ignite, explosive bolts holding the spacecraft down are severed and the entire stack soars spaceward.
6秒之后，航天飞机的双固体燃料火箭推进器点火，固定航天器的爆炸螺栓切断，整个航天飞机一飞冲天。
In a solid-fuel rocket the reaction of fuel mixture is relatively slow and steady rather than explosive.
在使用固体燃料的火箭中，燃料混合物的反应比较缓慢而稳定，而不是爆发性的。
Sawdust is one of solid combustible agent used in powder ammonium nitrate industrial explosive, which acts as sensitizer and looseness, but modification research on sawdust is little.
木粉是粉状硝铵工业炸药常用的固体碳氢类可燃剂，同时起到了敏化剂和疏松剂的作用，然而对其的改性研究较少。
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