笔名: Abdul 于November 01, 19115 09:30:23:

Is this a temporary or permanent position? college application essay structure Surprisingly, the IGM team also found small quantities of platinum group elements in the meteorite's fusion crust. The team are only able to identify these elements as an alloy of osmium, iridium and platinum, but its presence is unusual as the fusion crust is formed over too short a time period for these elements to easily accumulate.

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