Platinum, iridium and the rest are expensive precisely because they are rare.

正因为稀有，铂、铱等矿物才价格不菲。

If I run the hydrazine over an iridium catalyst, it'll separate into N2 and H2.

假如我用铱催化剂分解联氨，它将分解成氮气和氢气。

I'm going to delete " cretaceous, " I'm going to delete " Cenozoic" and I'm going to delete " iridium."

我要删除“白垩纪”、“新生代”、“铱”。

The metre was the distance between two scratches on a bar composed of a special alloy of platinum and iridium.

1米是指一根铂铱特殊合金杆两端划痕间的距离。

Iridium...What do they need the iridium for? -It's a stabilising agent.

铱...他们要铱干什么？-用来做稳定剂。

Yeah, iridium. It's found in meteorites. It forms anti-protons.

是的，金属铱。这种东西是从陨石中发现的。可以形成反质子。

Iridium is an element that’s rare on Earth, but very common in asteroids and comets.

铱是地球上稀有的元素， 但在小行星和彗星中却很常见。

The earth has Iridium in it, but because it is a heavy metal, most of it settles towards the center of the planet.

地球也有铱，但因为它是重金属，多数都沉降到行星的中心。

It's about 65 million years old and contains a lot of iridium, an element that's usually rare on Earth's surface.

它大约有 6500 万年的历史，含有大量的铱，这种元素在地球表面通常很稀有。

Iraq reported the theft of up to 10 grams of iridium isotope used to treat cancer to the International Atomic Energy Agency late last year.

伊拉克报道称去年年底报道称国际原子能机构用来治疗癌症的铱同位素丢失了10克。