2. Atomic oxygen in a low earth orbit is very active in chemical reactions, and it can
oxidate copper.
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低地球轨道的原子氧化学性能非常活泼,能使金属铜氧化。
3. XRF method that power is directly adopted pressing sample is used to analyse RE
oxidate in the rich dysprosium, which is simple and quick.
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采用粉末直接压力制样,XRF法分析富镝混合物中稀土元素,方法简便、快速。