upper stage meaning in English
上一级
上一阶段
Examples
- A ride in the lunar module's upper stage was quite an experience .
在登月舱上半截的一次驾驶，可真是一次难得的经验。 - Centaur upper stage
半人马上节火箭 - The optimization design of dfc is expounded and the concept and method of multiobjective optimization are used to the upper stage solid rocket motor ( cpkm ) of a kind of launching vehicle
阐述了面向成本的优化设计问题，并将多目标优化概念和方法应用于某运载火箭上面级固体发动机( cpkm )方案设计。 - But it is extremely attractive to planners concerned with sweeping up the large amount of space junk that now circles the planet in the form of dead satellites and spent upper stages of rockets
但是对于希望扫除环绕行星的大量太空垃圾（如报废的人造卫星及耗损的火箭上节）的计画者来说，非常具有吸引力。 - Using the ipga and setting the terminal speed increment of the upper stage and the manufacture cost of cpkm as objective functions , the rocket motor are processed dual - objective optimization design that has six design parameters
采用ipga算法，以该运载火箭上面级末速度增量最大及cpkm发动机的制造成本最低作为目标函数，对该发动机进行了双目标优化设计。