cesium

简明释义

英[ˈsiːzɪəm]美[ˈsiːziəm]

n. 铯（55号元素，符号 Cs）

英英释义

单词用法

同义词

反义词

例句

1.Thus the timing of the random ticks of a Geiger counter placed near the cesium might be used to generate random Numbers.

因此，放着在铯边上的盖革计数器的随机响声的间隔时间可以被用来产生随机数。

2.Cesium is absorbed by plants and works its way through the food chain, getting into meat and milk.

铯经植物吸收后，经过一番转化进入食物链、肉和牛奶中。

3."Iodines, cesium and strontium are concentrated in other types of seafood," she continued. "Fish can act like tea or coffee presses."

“碘，铯和锶还会在别的食物中富集，”她继续说道：“咖啡机或是茶壶当你按下按钮时，溶剂就会溶于水其中，鱼类的行为方式和这个很像。”

4.Cesium-137, with a half-life of 30 years, is another dangerous substance emitted in a full-scale nuclear meltdown.

核反应堆完全熔解后，会释放出另一种危险物质铯- 137。铯- 137的半衰期为30年。

5.Radioactive cesium has also been detected in food.

食物中也发现了放射性铯。

6.Cesium versus gold is the same delta electronegativity difference.

铯和金，具有相同的电负性差。

7.Researchers discovered a new application for cesium 铯 in medical imaging.

研究人员发现了铯在医学成像中的新应用。

8.The cesium 铯 fountain clock is one of the most accurate timekeeping devices available.

铯喷泉钟是现有最精确的计时设备之一。

9.The atomic clock uses cesium 铯 as its timekeeping element.

原子钟使用铯作为其计时元件。

10.In laboratories, cesium 铯 is often used in experiments involving atomic interactions.

在实验室中，铯常用于涉及原子相互作用的实验。

11.Scientists are studying the properties of cesium 铯 to improve quantum computing technologies.

科学家们正在研究铯的性质，以改善量子计算技术。

作文

Cesium, a chemical element with the symbol Cs and atomic number 55, is one of the most fascinating elements on the periodic table. It was discovered in 1860 by the German chemist Robert Bunsen and his assistant Gustav Kirchhoff through the use of a spectroscope. The name 'cesium' comes from the Latin word 'caesius,' which means sky blue, reflecting the color of its spectral lines. This element is classified as an alkali metal, and it is known for its remarkable properties. For instance, cesium is highly reactive and has a low melting point of just 28.5 degrees Celsius, making it one of the few metals that can be liquid near room temperature.One of the most significant applications of cesium (铯) is in atomic clocks. These clocks are incredibly precise and are used to define the second in the International System of Units (SI). A cesium (铯) atomic clock measures time based on the vibrations of cesium (铯) atoms, which oscillate at a frequency of 9,192,631,770 times per second. This precision is crucial for various technologies, including GPS systems, telecommunications, and scientific research. The accuracy of cesium (铯) clocks has revolutionized timekeeping and has paved the way for advancements in navigation and global positioning.In addition to its role in timekeeping, cesium (铯) is also utilized in various industrial applications. For example, it is used in the production of photoelectric cells and in the oil industry for drilling fluids. The unique properties of cesium (铯) make it valuable in these contexts, where its reactivity and ability to form compounds are advantageous. Furthermore, cesium (铯) is used in some types of ion propulsion systems, which are employed in space exploration. These systems rely on the ionization of cesium (铯) atoms to create thrust, showcasing the element's versatility beyond conventional applications.Despite its many benefits, cesium (铯) must be handled with care due to its radioactivity. The isotope cesium-137 (铯-137), which is a byproduct of nuclear fission, poses health risks if not managed properly. It can contaminate the environment and lead to serious health issues if ingested or inhaled. Therefore, safety protocols are essential when working with cesium (铯) and its derivatives, particularly in nuclear facilities and laboratories.In conclusion, cesium (铯) is a remarkable element with a wide range of applications, from atomic clocks to industrial uses. Its unique properties allow it to play a crucial role in modern technology and science. As we continue to explore the capabilities of this fascinating element, it is important to remain aware of the precautions necessary for its safe handling. The study of cesium (铯) not only enhances our understanding of chemistry but also contributes to advancements that improve our daily lives and technological progress.

铯是一种化学元素，符号为Cs，原子序数为55，是周期表上最引人注目的元素之一。它于1860年由德国化学家罗伯特·本生及其助手古斯塔夫·基尔霍夫通过光谱仪发现。‘铯’这个名字来源于拉丁语‘caesius’，意为天蓝色，反映了它的光谱线的颜色。该元素被归类为碱金属，以其显著的特性而闻名。例如，铯具有高度的反应性，熔点仅为28.5摄氏度，使其成为少数在接近室温时仍为液态的金属之一。铯（cesium）最重要的应用之一是原子钟。这些钟非常精确，用于定义国际单位制（SI）中的秒。铯（cesium）原子钟根据铯（cesium）原子的振动来测量时间，这些原子每秒振动9,192,631,770次。这种精确度对各种技术至关重要，包括GPS系统、电信和科学研究。铯（cesium）钟的准确性彻底改变了计时方式，为导航和全球定位的进步铺平了道路。除了在计时方面的作用外，铯（cesium）还用于各种工业应用。例如，它用于光电池的生产以及石油行业的钻井液。铯（cesium）的独特性质使其在这些情况下具有价值，其反应性及形成化合物的能力都很有利。此外，铯（cesium）还用于某些类型的离子推进系统，这些系统在太空探索中得到应用。这些系统依靠铯（cesium）原子的离子化来产生推力，展示了该元素超越传统应用的多样性。尽管有许多好处，但铯（cesium）必须小心处理，因为它具有放射性。铯-137（cesium-137）同位素是核裂变的副产品，如果处理不当，会对健康造成风险。它可能污染环境，并导致摄入或吸入后出现严重健康问题。因此，在与铯（cesium）及其衍生物一起工作时，安全协议是必不可少的，特别是在核设施和实验室中。总之，铯（cesium）是一种具有广泛应用的非凡元素，从原子钟到工业用途。它的独特性质使其在现代技术和科学中发挥着至关重要的作用。随着我们继续探索这一迷人元素的能力，重要的是要保持对安全处理所需预防措施的意识。对铯（cesium）的研究不仅增强了我们对化学的理解，还促进了改善我们日常生活和技术进步的进展。