## 先進材料制造商& 金屬粉末

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#### 什么是稀土？

What?are?rare?earths? Rare Earths is a 'Rare Earth'. In fact, this is just a misunderstanding left over from the 18th century. Several rare-earth elements were discovered after 1787, but few minerals were found. Due to the limitations of science and technology at that time, people could only make some impure, soil-like [...]