2009-10-02
2009-10-02
2009-10-02
2009-10-02
2009-10-02
access flap 接口盖 antenna 天线 Apollo 阿波罗号宇宙飞船 ascent stage 上升段 astronaut 航天员 capsule 太空舱...
2009-10-02
Sagittarius dwarf 人马矮星系 Sagittarius dwarf galaxy 人马矮星系 Sagittarius galaxy 人马星系 Saha equation 沙哈方程...
2009-10-02
2009-10-02
Galactic aggregate 银河星集 Galactic astronomy 银河系天文 Galactic bar 银河系棒 galactic bar 星系棒 galactic c...
2009-10-02
absolute stability 绝对稳定性 absorbing dust mass 致吸尘物质 absorption trough 吸收槽 abundance standard 丰度标准...
2009-10-02
2009-10-02
2009-10-02
2009-10-02
2009-10-02