first cosmic velocity
[力学英汉词典]
first cosmic velocity第一宇宙速度
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[新英汉石油技术词典] first cosmic velocity
[天文学英汉词典] first cosmic velocity
[英汉机械工程大词典] first cosmic velocity
[物理学英汉词典] first cosmic velocity
[电信英汉词典] first cosmic velocity
[石油英汉词典] first cosmic velocity