Stars with even lower amounts of oxygen and iron offer insight into the birth of the galaxy itself.

那些拥有更少氧气和铁元素的恒星能帮助我们深刻了解银河系本身的起源。

youdao

He reasoned that iron took on more or less oxygen in response to conditions in the kimberlitic magma itself—mainly in response to heat and the available oxygen.

他推断，铁吸收或多或少的氧气是由于金伯利岩浆本身的条件——主要是由于热量和可用的氧气。

youdao

You could run the reaction, take solid iron and gaseous oxygen, form iron oxide, measure the heat of formation of it, and tabulate it.

你可以进行一个反应，用固态铁和氧气生成氧化铁，测量它生成的热，列成表格。

youdao

Dr. SCHAWINSKI: So, in the very early universe, most of the elements that were made in the Big Bang were hydrogen and helium, and very few trace elements of heavier elements, like oxygen and iron and so forth.

NPR: What Makes Our Solar System Special?

Oxygen generators contain sodium chlorate and iron powder -- solid chemicals that are mixed and cast into a solid shape.

CNN: Expert: Oxygen generators should be safe as cargo

Upon exposure to water and oxygen, these minerals oxidize to form acid-, iron- and sulfate-rich drainage.

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