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lanlanzhu:[表情] 好厲害 (2014-01-05 21:25) Q;D0<Bv
phoenixzqy:把上學(xué)時(shí)候?qū)W的光學(xué)知識(shí)、數(shù)學(xué)知識(shí)結(jié)合到一塊,就能計(jì)算出來(lái)了。常交流! (2014-01-05 22:17) /N-_FMl?