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關注：1
2013-05-23 12:21
求翻譯："Quartz" is a term that includes both well crystallized and compact forms of silica. For the most time the different quartz varieties have been considered as species of their own and have not been systematically grouped together before the 19th century. Their common chemical nature was discovered by the Swedish chemist是什么意思？ 待解決
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- 離問題結束還有
"Quartz" is a term that includes both well crystallized and compact forms of silica. For the most time the different quartz varieties have been considered as species of their own and have not been systematically grouped together before the 19th century. Their common chemical nature was discovered by the Swedish chemist
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2013-05-23 12:21:38
“石英”是一個術語，它包括硅結晶良好和緊湊的形式。石英的不同品種的大部分時間都被視為自己種的，并沒有得到系統分組前19世紀。在18世紀末，由瑞典化學家貝格曼發現他們共同的化學性質和一段時間的硅被認為是一種化學元素。在1823他的同胞J.J.貝齊里烏斯分解石英，發現它是氧的化合物和一個新的元素，硅。后，人們意識到，所有這些品種的化學物質相同，二氧化硅，二氧化硅，他們被分成小組。
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2013-05-23 12:23:18
“石英”一詞,也包括兩個和緊湊型形式的硅結晶。 在石英品種不同的最長的時間已被認為是物種并沒有有計劃自己和組合在一起的前19世紀。 他們發現了共同的化學性的瑞典化學家貝格曼在18世紀,并在一段時間內被認為是一個硅化學成分。
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2013-05-23 12:24:58
正在翻譯，請等待...
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2013-05-23 12:26:38
正在翻譯，請等待...
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2013-05-23 12:28:18
正在翻譯，請等待...
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