小行星碰撞后的碎片可能会含有大量的铱，而大气洋流会把这些物质带到全球各地。
Debris thrown into the atmosphere by an asteroid collision would presumably contain large amounts of iridium, and atmospheric currents would carry this material all over the globe.
这一沉积层富含稀有金属铱，以及其他在陨石中较丰富而在地壳中十分罕见的元素。
This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth.
他们偶然发现一种稀有金属铱的含量在边界处突然变得很丰富，然后又慢慢地消失了。
They had found, accidentally, that a rare metal, iridium, suddenly became very abundant exactly at the boundary and then slowly fell away.
这一铱异常为阿尔瓦雷斯假说提供了强有力的支持，尽管小行星本身从未被发现。
This iridium anomaly offers strong support for the Alvarez hypothesis even though no asteroid itself has ever been discovered.
尤卡坦半岛上富含铱的沉积层和一个巨大的陨石坑提供了证据，证明了约6500万年前，一颗大型陨石撞击了地球。
An iridium-enriched sediment layer and a large impact crater in the Yucatn provide evidence that a large meteorite struck Earth about 65 million years ago.
铱存在于陨石和火山物质中，但在火山物质中同时包含高浓度的镍和铬。
Iridium occurs in meteorites and volcanic material, but in the latter case it is accompanied by elevated levels of nickel and chromium.
人们发现，在一些保存着太阳系原始化学成分的陨石中，铱元素的含量很高。
Ir is found in high concentrations in some meteorites, in which the solar system's original chemical composition is preserved.
在这个木炭层中，研究人员并没有发现铱，或者至少不是大量的铱。
Something the researchers have not found in this layer is iridium, or at least not a lot of it.
之后他们计算了铱层上的物种。
事实上，在某些地方发现了两个铱岩层。
他们也在寻找一种比铱更便宜的催化剂。
确实，有些地方发现了有两个铱层。
在电脑内存设备护面，深水导管，X射线望远镜和制造粘胶纤维的设备中，也都能找到铱的身影。
Iridium can also be found in crystals in computer memory devices, deep-water pipes, X-ray telescopes and the equipment that makes rayon fibers.
到目前为止，大部分方式还在依赖象铱那样不实用的稀有原料作为引发反应的催化剂。
Until now, most approaches relied on impractically scarce materials like iridium as a catalyst that triggers the reaction.
在一个案例中，业内高管发现一种号称纯金的涂层其实是一种复杂的合金，含有锇、铱、钌、铑等稀有金属。
In one case, executives discovered a coating advertised as pure gold that masked a complex alloy, which included rare metals such as osmium, iridium, ruthenium and rhodium.
他们对30英尺深度略高于铱层的一个沉积层特别感兴趣。
They were especially interested in a 30-ft. layer of sediment just above the iridium layer.
科学家用三年的时间研发这款“铱金蓝宝”，剃须刀柄由99.9%纯度的铱制成。 铱是抗腐蚀性最强的顶级金属，只能在陨星中找到。
Researchers spent three years developing the Zafirro Iridium, which has a handle made of 99.9 per cent pure iridium - the most corrosion-resistant platinum metal, found only in meteorites.
地质记录显示，在65万年前地球上同一深度的地层，世界各地都有一层薄薄的铱层存在。
At the same 65-million-year depth, the geologic record reveals that a thin layer of iridium was deposited pretty much everywhere in the world.
该小组还正在努力寻找一种更常见的，更便宜的催化剂，以代替在验证性概念研究中使用的相对昂贵和稀有铱催化材料。
The team is also working to find a more commonplace, less-expensive material for the catalyst, to replace the relatively rare and costly iridium used in this proof-of-concept study.
铱，通常被用于太空火箭，比铂金稀有十倍并且高度耐热，因此理论上即使它掉进岩浆中也不会熔化。
Iridium, usually used in space rockets, is ten times rarer than platinum and highly resistant to heat so theoretically it can be dropped it into lava, and it will not melt.
依此思路推测，它有点像“铱闪光”，它是由太阳光反射到铱卫星上所产生。
In this way it would act like an 'iridium flare.' The flares are created by sunlight reflecting off iridium satellites.
若用相同大小的20纳米烟尘颗粒替换铱粒子，则摄入率降低75%。
Change the 20-nanometer iridium to same-sized soot particles and the uptake rate falls by 75 percent.
这起事故是关于美国铱公司12年前发射的一颗卫星，以及俄罗斯1993年发射的已经失效的宇宙卫星。
The incident is thought to have involved a 12-year-old satellite belonging to the US company Iridium and a defunct Russian Cosmos satellite that was put into orbit in 1993.
如果你想要铱银2008奔驰，在杂志中找到它的照片，用单独一页描述该目标。
If you wanted that iridium silver 2008 Benz, then find pictures of it in magazines and make a page exclusively dedicated to that goal.
两卫星都是用于电信，美国卫星还是铱网络66颗卫星的一部分，用于提供世界超过250,000人的卫星电话服务。
Both satellites were used for telecommunications, with the us satellite an active part of Iridium's network of 66 craft which provide satellite telephone access to more than 250, 000 people worldwide.
彗星是由“脏冰”所组成，而不是像小型那样由固体岩石组成，所以只含有少量的铱。
Comets consist of "dirty ice", rather than solid rock, and so contain little iridium.
然而，查特基博士的说法引发了疑问：为什么全球白垩纪晚期岩石中含有冲击石英和铱的喷发物地层只有一层？ 答案或许是，两次撞击是在同时发生的。
This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.
然而，查特基博士的说法引发了疑问：为什么全球白垩纪晚期岩石中含有冲击石英和铱的喷发物地层只有一层？ 答案或许是，两次撞击是在同时发生的。
This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.
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