GUIYANG, March 18 (Xinhua) -- Xi Jinping, general secretary of the Communist Party of China Central Committee, has stressed that areas with large ethnic minority populations should preserve their ...

事实上，温伯格及其后众多物理学家的努力跟宇宙学有关。宇宙诞生之初，处于极高温度下，单位体积内的能量非常之高。随着宇宙的加速膨胀，在宇宙诞生后0.01 ns，温度逐步下降到1015 ...