送交者: timliang 于 2010-07-27, 12:21:47:

回答: The laws of physics have not changed last time I check. 由 steven 于 2010-07-27, 12:13:16:

• the context is infrared laser. (无内容) - steven (0 bytes) 2010-07-27, 12:42:23 (467994)

加跟贴