一光年等于多少m/s.快急啊!光在空气中的传播=3×10×10×10×10×10×10×10×10m/s 按365天算3×10×10×10×10×10×10×10×10×365×24×60×60
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![一光年等于多少m/s.快急啊!光在空气中的传播=3×10×10×10×10×10×10×10×10m/s 按365天算3×10×10×10×10×10×10×10×10×365×24×60×60](/uploads/image/z/3256830-54-0.jpg?t=%E4%B8%80%E5%85%89%E5%B9%B4%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91m%2Fs%EF%BC%8E%E5%BF%AB%E6%80%A5%E5%95%8A%21%E5%85%89%E5%9C%A8%E7%A9%BA%E6%B0%94%E4%B8%AD%E7%9A%84%E4%BC%A0%E6%92%AD%EF%BC%9D3%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710m%2Fs+%E6%8C%89365%E5%A4%A9%E7%AE%973%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%9710%C3%97365%C3%9724%C3%9760%C3%9760)
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