lanthanum

简明释义

英[ˈlænθənəm]美[ˈlænθənəm]

n. [化学] 镧

英英释义

单词用法

同义词

反义词

例句

1.Lanthanide: Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57-71).

镧系：周期表中从镧到镏（原子序数57～71）15种按顺序排列的化学元素系列。

2.A new type of solid acid was prepared by calcinations of titanium sulphate doped lanthanum oxide.

搀杂氧化镧的硫酸钛经高温焙烧后制得一种新型固体酸。

3.To give just one example, every Toyota Prius has over 25 pounds of lanthanum in its nickel-metal hydride battery.

举个例子，每辆丰田普瑞斯的镍合金电池里就有超过25磅镧族金属材料。

4.But what's really shocking is when you compare this with this, it's based upon sonnet 57 because lanthanum is element 57.

但是真正令人震惊的是，当你比较这个和这个的时候，基于诗57来看7，而正好镧是57号元素。

5.High concentration of Lanthanum nitrate inhibited the plantlets growth.

过高的浓度对试管苗生长有一定抑制。

6.As soon as lanthanum takes that electron, this level rises ever so slightly, and then we jump down here and fill in the lanthanide.

一旦镧得到了电子，这一层就会稍稍上升，然后我们向下填一下镧系元素。

7.It seems that cerium hexaboride is more easily oxidized than lanthanum hexaboride under the same oxidation conditions.

在同样的氧化条件下，六硼化铈在空气中比六硼化镧容易氧化。

8.Li-doped lanthanum chromite powders in stoichiometric proportions were prepared by sol-gel process.

采用溶胶-凝胶法，按化学配比将锂元素掺入铬酸镧中制得粉末。

9.The compound contains lanthanum, which is essential for producing high-quality glass.

该化合物含有镧，这对于生产高质量的玻璃至关重要。

10.Researchers are studying the properties of lanthanum to improve battery technology.

研究人员正在研究镧的性质，以改善电池技术。

11.In the periodic table, lanthanum is found in the f-block.

在周期表中，镧位于f区。

12.The use of lanthanum in catalysts can enhance chemical reactions.

在催化剂中使用镧可以增强化学反应。

13.Optical devices often utilize lanthanum oxide for improved clarity.

光学设备通常利用镧氧化物来提高清晰度。

作文

Lanthanum, represented by the symbol La and atomic number 57, is a rare earth element that plays a crucial role in various industrial applications. As one of the first elements in the lanthanide series, lanthanum (镧) is known for its unique properties, including its malleability, ductility, and ability to absorb hydrogen. These characteristics make it an essential material in the production of high-performance alloys and catalysts. In recent years, the demand for lanthanum (镧) has increased significantly due to its applications in the manufacturing of rechargeable batteries, particularly nickel-metal hydride (NiMH) batteries used in hybrid vehicles. The presence of lanthanum (镧) in these batteries enhances their efficiency and lifespan, making them a popular choice among environmentally conscious consumers. Moreover, lanthanum (镧) is also utilized in the production of phosphors for lighting and display technologies. The addition of lanthanum (镧) compounds to phosphor materials improves brightness and color quality, which is essential for modern LED lights and screens. As technology continues to advance, the reliance on lanthanum (镧) in these sectors is expected to grow. Another significant application of lanthanum (镧) is in the field of optics. Lanthanum (镧) oxide is used in the production of high-quality glass, particularly for camera lenses and telescope optics. The optical properties of lanthanum (镧) contribute to the clarity and precision required for professional photography and astronomy. Despite its numerous benefits, the extraction and processing of lanthanum (镧) pose environmental challenges. Mining activities can lead to habitat destruction and pollution if not managed properly. Therefore, it is crucial for industries to adopt sustainable practices when sourcing lanthanum (镧) to minimize their ecological footprint. In conclusion, lanthanum (镧) is a versatile and valuable element that has found its way into various applications across multiple industries. Its role in battery technology, lighting, and optics highlights its importance in modern society. As we continue to innovate and seek alternatives to fossil fuels, the significance of lanthanum (镧) will only increase. Understanding its properties and applications can help us appreciate the vital role it plays in shaping our technological landscape and driving sustainable development.