南大牛人GRE_作文5.5_分_备考经验

hansen0514 · 发表于 2014-7-22 09:24:17

good!!!!!!!!

logggggg · 发表于 2014-7-22 15:16:45

太牛了！！！

ianfung9264 · 发表于 2014-7-23 04:21:18

Explain how visual binaries are observed
Visual binarie is the rare case where two gravitationally bound stars can be resolved as two separate stars. They must be widely separated with respect to line of sight. They can be observed optically.

wuhaochase · 发表于 2014-7-23 11:25:12

牛逼人啊

百尺高梧 · 发表于 2014-7-23 17:06:04

作文最头疼了，谢谢楼主

Catherine2046 · 发表于 2014-7-23 17:17:17

THX!!!!!!!!!!!!!!!!!!

collider · 发表于 2014-7-23 22:22:39

谢谢分享

kikakita · 发表于 2014-7-23 23:04:35

让我来看看

teenie_love · 发表于 2014-7-24 03:15:24

very good and thanks

roxanne_yvonne · 发表于 2014-7-24 04:47:40

thanks for sharing

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