固体导弹，亦称“固体推进剂导弹”。采用固体火箭发动机作为动力装置的导弹。固体导弹体积小，重量轻，结构简单，维护使用方便，反应时间短，机动性强。广泛应用于机动战略导弹和战术导弹。
它正在逐步地采用固体燃料导弹更换它陈旧的、液体燃料核弹道导弹，将使这些导弹发射更快和更为灵活。
It is gradually replacing its older, liquid-fueled ballistic nuclear-capable missiles with solid-fuel missiles, which will make launching them faster and less cumbersome.
级间热分离具有改善和提高继续飞行级的稳定性和入轨精度而被固体弹道式导弹广泛采用。
The thermal stage separation being provided with improving and enhancing stability and orbit precision for flight was abroad adopted in solid-propellant ballistic missile.
认为：用激光拦截助推段弹道导弹时，其液体贮箱壳体和固体燃料发动机壳体是最易损的，生存能力很低；
It is realized: when ballistic missile in boost phase is intercepted with CW Laser, its liquid storage and solid rocket engine shells are the brittlest, the survivability is very low;
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