“推进器”的英语

推进器的叶片已经安装好了.The propeller blade has been mounted.然后地面控制人员将会发射推进器，把卫星送入正常轨道。Ground controllers will then fire the booster, sending the satellite into its proper orbit.较轻的推进器采用液态氢, 较重的采用自燃推进剂.The lighter version used liqu...