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煤炭是亿万年前古植物通过吸收太阳能而形成的，今天我们利用的煤炭实际上是亿万年前太阳能的再利用。由此，这深深地埋藏在地下，在国民经济发展中发挥着巨大作用的煤炭就获得了“太阳石”、“乌金”的雅称。1．小煤窑，功不可没我国是一个以固体能源为主的国家，能源储蓄量居
Coal was formed from the absorption of solar energy by ancient plants hundreds of millions of years ago. The coal we use today is actually the reuse of solar energy millions of years ago. As a result, the coal that has been deeply buried underground and has played a significant role in the development of national economy has gained the nickname of “Sun Stone” and “Ujin.” 1. Small coal mines, contributed to our country is a solid energy-based countries, the amount of energy savings