煤焦油之树

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煤和炭,这两个词在古代是有区别的。炭指用木柴烧成的木炭。《礼经》中记述,秋季“草木黄落,乃伐薪为炭。”唐代大诗人白居易的诗中写道:“卖炭翁,伐薪烧炭南山中。”而煤乃是矿藏,春秋战国时期称为石涅或涅石。战国时代成书的《山海经》中记述:“女儿之山,其上多石涅。”这是我国有关煤的最早记载。从考古可知,六、七千年前的新石器时代,我国先民就开始利用煤作燃料了,在世界各国中居于先进地位。魏晋唐宋时,煤称为石炭,又称石墨。北宋大文学家苏轼在《石 Coal and carbon, these two terms are different in ancient times. Charcoal means charcoal fired from firewood. “Book of Rites” in the account, the fall “fall and fall, but cutting wages for charcoal.” Tang poet Bai Juyi’s poem wrote: “Selling carbon Weng, cut firewood burning Nanshan.” And coal is a mineral, Spring and Autumn and Warring States period known as the stone or nirvana. The Book of Mountains and Seas, written in the Warring States Period, states: “The Mountain of Daughters, on which Doris Nirvana.” This is the earliest record of coal in our country. From the archeology we can see that six or seven thousand years ago in the Neolithic Age, our ancestors began to use coal as a fuel, living in advanced positions in all countries in the world. Wei, Jin, Tang and Song dynasties, coal is called carbon, also known as graphite. Northern Song Dynasty writer Su Shi in "stone
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