Adipic acid is the most important dicarboxylic acid, and it is a valuable raw material used in the chemical industry.

己二酸是工业上最重要的脂肪族二元羧酸，是重要的有机化工原料。

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Guinea is the world's largest producer of bauxite, the raw material used to make aluminum, and also produces diamonds and gold.

几内亚是世界上最大的铝土矿生产国，而旅途是生产铝的原材料。几内亚还盛产钻石和金子。

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Two Japanese companies are the leading producers of silicon wafers, the raw material used to make computer chips, accounting for more than 60 percent of the world's supply.

有两家日本公司是全球领先的硅晶片生产商，硅晶片用于制造电脑芯片，占了全球供应的60%还多。

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The raw material used to make these drugs are readily available to ANYONE, as they typically come out of China.

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Silicon, the major raw material used in the manufacture of solar panels, requires an energy-intensive process to turn it into solar-grade silicon.

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In the Middle Ages it was discovered to be a rich source of aluminium sulphate - a crucial raw material used as a fixing agent in dyeing cloth.

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