铱

Iridium is a rare and lustrous transition metal used in satellite communication systems.
铱是一种稀有而光泽的过渡金属，用于卫星通信系统。
The mineralogical composition of the Earth's crust contains trace amounts of iridium.
地壳的矿物组成中含有微量的铱。
The iridium plating on luxury cars' wheels provides exceptional durability.
豪华汽车轮毂上的铱镀层提供了卓越的耐用性。
Astronomers discovered a new asteroid containing a high concentration of iridium, suggesting it might have originated from an impact event.
天文学家发现了一颗富含铱的新小行星，这表明它可能源自撞击事件。
In the geological timescale, the presence of iridium in sediment layers indicates the occurrence of mass extinctions.
在地质时间尺度上，沉积层中的铱含量表明大规模灭绝事件的发生。
The iridium content in the sediments from the Cretaceous-Tertiary boundary hints at a catastrophic event that wiped out dinosaurs.
白垩纪-第三纪边界沉积物中的铱含量暗示了一场导致恐龙灭绝的大灾难。
Iridium was first isolated by Swedish chemist Jean-Baptiste Biot in 1803.
1803年，瑞典化学家让-巴蒂斯特·比奥首次从天然物质中分离出铱。
The iridium layer in ice cores helps scientists study past climate conditions.
冰芯中的铱层帮助科学家研究过去的气候条件。
Iridium alloys are used in high-temperature applications due to their excellent resistance to corrosion and wear.
铱合金由于其出色的耐腐蚀性和耐磨性，被用于高温应用。
After the end of the Cold War, the demand for iridium decreased as satellite technology advanced.
冷战结束后，随着卫星技术的发展，对铱的需求下降。