lanthanides

简明释义

英[lanθənɪdz]美[lanθənɪdz]

n. 镧系；[化学]镧系元素（lanthandes 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Aim To study the biochemistry of lanthanides, the cooperative action of inorganic and organic anti-tumor drugs.

目的研究稀土元素的生物化学作用和无机、有机抗肿瘤药物的协同作用。

2.Objective To calculate the transfer coefficients of 14 lanthanides from soil via diet to human body and their distribution in 10 kinds of organ or tissue.

目的计算14种镧系元素从土壤经膳食向人体的转移系数和在10种器官、组织中的分布。

3.It is not as though the rare-earth elements-scandium, yttrium and lanthanum plus the 14 so-called lanthanides-are all that rare.

并非所有稀土元素都像钪、钇、镧加上14所谓的镧系元素那样稀少。

4.And if you remember this phrase, I don't know why you would, but this will help you learn the lanthanides in order.

如果你能记得这句话的话，我不管你们是怎么做到的，但是这个确实会帮助你按顺序记住镧系元素。

5.The dependence of relative intensity and frequency of bands of aromatic ring on the atomic number of lanthanides indicates the presence of a double-double effect.

芳香环谱带的相对强度和频率对于镧系元素原子序数的依赖关系表明双-双效应的存在。

6.The dependence of relative intensity and frequency of bands of aromatic ring on the atomic number of lanthanides indicates the presence of a double-double effect.

芳香环谱带的相对强度和频率对于镧系元素原子序数的依赖关系表明双-双效应的存在。

7.The extraction behavior of lanthanides is investigated by using solid-liquid extraction technique.

用固-液萃取法研究了稀土元素的萃取分离。

8.Rare earths, also called lanthanides, are chemically similar to actinides (89 through 104).

稀土元素也称镧系元素，化学性质与锕族元素(89到104)相似。

9.So, remember when you're looking at your periodic table, don't forget about the lanthanides, sometimes they come into play.

因此，要记住，当你在看元素周期表时，不要忘了镧系元素，有时候也会用到它们。

10.A subsidiary method has been developed for studying the metabolism of lanthanides in rice.

为稀土元素在水稻中的代谢研究提供了一种可借鉴的方法与研究手段。

11.In the field of nuclear medicine, lanthanides 镧系元素 are used as tracers for imaging.

在核医学领域，lanthanides 镧系元素被用作成像的示踪剂。

12.Researchers are exploring the potential of lanthanides 镧系元素 in improving the efficiency of LED lights.

研究人员正在探索lanthanides 镧系元素在提高LED灯效率方面的潜力。

13.Many smartphone screens utilize lanthanides 镧系元素 for better display quality.

许多智能手机屏幕利用lanthanides 镧系元素来提高显示质量。

14.The mining of lanthanides 镧系元素 has significant environmental impacts that need to be addressed.

采矿lanthanides 镧系元素对环境有重大影响，需要加以解决。

15.The use of lanthanides 镧系元素 in high-performance magnets is becoming increasingly common in modern technology.

在现代技术中，使用lanthanides 镧系元素制造高性能磁铁变得越来越普遍。

作文

The periodic table is a fascinating tool that organizes elements based on their atomic structure and properties. Among the various groups of elements, the group known as the lanthanides (镧系元素) holds a special place due to their unique characteristics and applications. The lanthanides are a series of 15 chemical elements with atomic numbers from 57 to 71, starting with lanthanum and ending with lutetium. These elements are f-block elements, which means they have their last electrons filling the f-orbital. One of the most intriguing aspects of the lanthanides is their similar chemical properties. They are all shiny metals that are hard and have high melting points. This similarity makes it challenging to separate them from one another in their natural state. However, their unique properties also make them incredibly valuable for various industrial and technological applications. For instance, the lanthanides are crucial in the production of strong permanent magnets used in electric vehicles and wind turbines. Their magnetic properties are leveraged to create lightweight and efficient motors, contributing to the advancement of green technology.In addition to their magnetic applications, the lanthanides are also utilized in the field of optics. Europium and terbium, two members of this series, are used in phosphors for color television tubes and LED lights. They help produce vibrant colors and enhance the quality of the images we see on screens. Furthermore, neodymium, another lanthanide, is used in the creation of lasers, which have applications ranging from medical procedures to cutting materials in manufacturing.Moreover, the lanthanides play a significant role in the field of chemistry and materials science. They are often used as catalysts in various chemical reactions, improving efficiency and yield. Their ability to form complex compounds makes them invaluable in research, particularly in developing new materials and pharmaceuticals. Scientists continue to explore the potential of the lanthanides in creating innovative solutions to modern challenges.Despite their many benefits, the extraction and processing of lanthanides can pose environmental challenges. Mining these elements often involves significant ecological disruption and pollution. As demand for lanthanides continues to grow, especially with the rise of renewable energy technologies, it is crucial to develop sustainable practices for their extraction and use. Researchers are actively seeking ways to recycle lanthanides from electronic waste and reduce the environmental impact of mining operations.In conclusion, the lanthanides (镧系元素) are a remarkable group of elements that significantly contribute to modern technology and industry. Their unique properties allow for a wide range of applications, from magnets and lasers to catalysts and phosphors. As we continue to harness the potential of the lanthanides, it is essential to address the environmental challenges associated with their use and ensure a sustainable future for these vital elements.

周期表是一个迷人的工具，它根据元素的原子结构和性质对元素进行组织。在各种元素组中，被称为镧系元素（lanthanides）的这一组由于其独特的特性和应用而占据了特殊的位置。镧系元素是一系列15种化学元素，原子序数从57到71，从镧（lanthanum）开始，到铥（lutetium）结束。这些元素是f区元素，这意味着它们的最后电子填充的是f轨道。镧系元素最引人入胜的方面之一是它们相似的化学性质。它们都是光亮的金属，坚硬且具有高熔点。这种相似性使得在自然状态下分离它们变得具有挑战性。然而，它们独特的性质也使得它们在各种工业和技术应用中极具价值。例如，镧系元素在生产电动车和风力涡轮机中使用的强大永久磁铁中至关重要。它们的磁性被用于创造轻便高效的电动机，为绿色技术的进步做出了贡献。除了磁性应用，镧系元素还在光学领域中得到应用。两个该系列的成员，铕（Europium）和铽（Terbium），用于彩色电视管和LED灯的荧光粉。它们帮助产生鲜艳的颜色，并增强我们在屏幕上看到的图像质量。此外，另一个镧系元素，钕（Neodymium），被用于激光的制造，激光在医疗程序和材料切割等制造业中都有应用。此外，镧系元素在化学和材料科学领域中也发挥着重要作用。它们通常用作各种化学反应中的催化剂，提高效率和产量。它们形成复杂化合物的能力使它们在研究中不可或缺，特别是在开发新材料和药品方面。科学家们继续探索镧系元素在创造现代挑战的创新解决方案中的潜力。尽管有许多好处，但提取和加工镧系元素可能会带来环境挑战。开采这些元素往往涉及显著的生态破坏和污染。随着对镧系元素的需求持续增长，尤其是在可再生能源技术兴起的背景下，开发可持续的提取和使用实践至关重要。研究人员正在积极寻求从电子废物中回收镧系元素的方法，以减少采矿活动的环境影响。总之，镧系元素（lanthanides）是一组显著的元素，对现代技术和工业做出了重要贡献。它们独特的性质使得它们在从磁铁、激光到催化剂和荧光粉等广泛应用中发挥作用。随着我们继续利用镧系元素的潜力，必须解决与其使用相关的环境挑战，以确保这些重要元素的可持续未来。