The material which the liquid-propellant rockets burn to make the jet gases is liquid.
液化 推进火箭通过燃烧产生喷气的材料是液体；
A variety of mechanical surfaces have been employed for deflecting the exhaust jets of solid-propellant rockets.
人们已经用过各种类型的机械控制面来偏转固体推进剂火箭的排气流。
The material which the liquid-propellant rockets burn to make the jet gases is liquid. This is something like gasoline, or kerosene, or alcohol that can brun.
液化推进火箭通过燃烧产生喷气的材料是液体；这种液体有点像汽油、煤油或酒精一类燃料。
The paper deduced the Fluid dynamics model of Spinning solid propellant rockets, and validated the Fluid dynamics model by analyzing the examples, the result accord with the actual status.
推导了一种自旋固体火箭的流体动力学模型，并通过实例对模型进行了验证计算，计算结果与实际情况基本吻合。
Whereas chemical rockets waste too much propellant to reach a net change in spacecraft velocity, electric thrusters can do exactly the same mission using just a small fraction of the propellant.
鉴于化学燃料火箭浪费太多的推进剂难以实现飞船速度的静变化，电力推进器仅仅使用一小点推进剂就可以做同样的任务。
Solid-fuel rockets, in which the fuel and oxidiser are pre-mixed into a stable, solid propellant and then packed inside the case of the rocket, are simpler, lighter and relatively safer.
固体燃料火箭发动机的构造更简单、分量更轻，而且相对更安全。 在固体燃料火箭发动机里，燃料和氧化剂被预先混合成稳定的液态推进剂，然后被塞满火箭发动机的燃料箱里。
Solid-fuel rockets, in which the fuel and oxidiser are pre-mixed into a stable, solid propellant and then packed inside the case of the rocket, are simpler, lighter and relatively safer.
固体燃料火箭发动机的构造更简单、分量更轻，而且相对更安全。 在固体燃料火箭发动机里，燃料和氧化剂被预先混合成稳定的液态推进剂，然后被塞满火箭发动机的燃料箱里。
应用推荐