2. Atomic oxygen in a low earth orbit is very active in chemical reactions, and it can
oxidate copper.
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.
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。