锇

Osmium is a dense, hard, blue-gray metal and is used in the tips of fountain pen nibs due to its durability.
钽是一种密度高、硬度大、呈蓝灰色的金属，因其耐用性而被用于自来水笔尖。
The osmium tetroxide is widely used in organic chemistry for the oxidation of alcohols.
四氧化锇在有机化学中广泛用于醇的氧化反应。
Osmium is one of the rarest elements in the Earth's crust with an average concentration of only 0.0005 parts per billion.
钽是地壳中最稀有的元素之一，平均浓度仅为十亿分之五。
The high melting point of osmium makes it suitable for use in high-temperature applications such as aircraft engines.
钽的高熔点使其适用于高温应用，如飞机发动机。
Osmium alloys are utilized in the production of wear-resistant parts for various industrial machines.
钽合金被用于制造各种工业机器耐磨损部件的生产。
In首饰 making, osmium can be combined with iridium to create durable and beautiful rings and pendants.
在珠宝制作中，钽可以与铱结合，制成既耐用又美观的戒指和吊坠。
Due to its hardness, osmium is also used as a hardening agent in cutting tools.
由于其硬度，钽还用作切割工具中的硬化剂。
Trace amounts of osmium can be found in meteorites, providing insight into the early solar system's composition.
在陨石中可发现微量的钽，这为我们了解早期太阳系的成分提供了线索。
Osmium's nuclear properties make it a potential candidate for advanced nuclear reactor fuel elements.
钽的核性质使其成为先进核反应堆燃料元件的潜在候选材料。
Osmium isotopes have been used in geochronology to date rocks and determine the age of the Earth's crust.
钽同位素已应用于年代学，用于测定岩石年龄以及确定地壳的年龄。