送交者: suprathinker 于 2012-09-12, 14:31:34:

回答: no. That is still light speed, but not 'c'. 由 steven 于 2012-09-12, 14:26:40:

• the core of sun has density 150 times of water, and it is - steven (35 bytes) 2012-09-12, 17:07:56 (683422)

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