Read Edit View history 宇宙速度 yǔzhòusùdù escape velocity Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 宇宙速度 yǔzhòusùdù escape velocity 航天器需要达到第二宇宙速度才能脱离地球引力。 Edit Delete References Add reference No references for this word.