metals

简明释义

英['met(ə)lz]美['mɛtlz]

五金

英英释义

单词用法

同义词

反义词

例句

1.The market for recycled commodities like aluminum and other metals remains strong despite economic changes in the recycling industry.

尽管回收行业发生了经济变化，但铝和其他金属等回收商品的市场依然强劲。

2.Scientists have strived to find a solution by mixing it with expensive metals such as nickel.

科学家们一直在努力寻找一种解决方案，将其与镍等昂贵金属混合使用。

3.They and colleagues have invented a way for damaged metals to heal themselves.

他们与同事研发出了一种能让受损金属自我愈合的方法。

4.We are talking about the Neolithic period here, which was the time before stone tools began to be replaced by tools made of bronze and other metals.

我们这里在说的是新石器时代，是石器开始被青铜和其他金属制工具所取代之前的那个时代。

5.Low temperature contracts metals.

低温使金属收缩。

6.Lead is one of the softer metals.

铅是硬度较低的金属之一。

7.Silver is the most malleable of all metals.

银是所有金属中延展性最好的。

8.Different metals have different melting points, which is important for manufacturing.

不同的金属有不同的熔点，这对制造业很重要。

9.Some metals are good conductors of electricity, like copper and aluminum.

一些金属是良好的电导体，比如铜和铝。

10.The jewelry industry often uses precious metals such as gold and silver.

珠宝行业通常使用黄金和白银等贵重金属。

11.Many construction materials are made from various types of metals.

许多建筑材料是由各种类型的金属制成的。

12.Recycling metals helps reduce waste and conserve natural resources.

回收金属有助于减少废物并保护自然资源。

作文

Metals are a significant part of our daily lives, playing crucial roles in various industries and applications. They are typically characterized by their ability to conduct electricity and heat, malleability, ductility, and luster. The term 'metals' refers to a group of elements that are usually solid at room temperature, with the exception of mercury. These elements can be found in nature as ores, which are mined and processed to extract the pure forms of the metals. Common examples of metals include iron, copper, aluminum, and gold. Each of these metals has unique properties that make them suitable for specific uses. For instance, iron is known for its strength and is widely used in construction and manufacturing. Copper, on the other hand, is an excellent conductor of electricity and is often used in electrical wiring.The extraction and processing of metals (金属) from their ores is a complex process that involves several steps, including mining, refining, and alloying. Mining involves removing the ore from the earth, which can have significant environmental impacts. Once the ore is extracted, it must be refined to remove impurities and obtain pure metals (金属). This is often done through smelting, where the ore is heated to high temperatures to separate the metal from its oxide. After refining, metals (金属) can be combined with other elements to create alloys, which can enhance their properties for specific applications.The use of metals (金属) is ubiquitous in modern society. From the cars we drive to the buildings we live and work in, metals (金属) are essential components. In electronics, metals (金属) like copper and gold are used to create circuits and connections due to their excellent conductivity. In construction, steel, which is an alloy of iron, is a fundamental material used for structural support. Furthermore, metals (金属) also play a vital role in renewable energy technologies, such as solar panels and wind turbines, where they are used in various components to improve efficiency and durability.However, the extraction and use of metals (金属) also raise environmental concerns. Mining activities can lead to habitat destruction, soil erosion, and pollution of water sources. Furthermore, the processing of metals (金属) often requires significant energy input, contributing to greenhouse gas emissions. Therefore, there is a growing emphasis on sustainable practices in the metals (金属) industry, such as recycling and the development of more efficient extraction methods. Recycling metals (金属) not only reduces the need for new mining but also conserves natural resources and energy.In conclusion, metals (金属) are integral to our everyday lives and the functioning of various industries. Their unique properties allow for a wide range of applications, from construction to electronics and renewable energy. As we continue to rely on metals (金属), it is essential to address the environmental challenges associated with their extraction and use. By promoting sustainable practices, we can ensure that future generations can benefit from these valuable resources while minimizing their impact on the planet.

金属是我们日常生活中重要的一部分，在各个行业和应用中发挥着关键作用。它们通常以导电性和导热性、延展性、可塑性和光泽为特征。术语“金属”指的是一组元素，通常在室温下为固体，除了汞。这些元素可以作为矿石在自然界中找到，经过开采和加工提取出纯金属的形式。常见的金属包括铁、铜、铝和黄金。这些金属各自具有独特的性质，使其适合特定用途。例如，铁以其强度而闻名，广泛用于建筑和制造。而铜则是优良的导电体，常用于电线。从矿石中提取和加工金属是一个复杂的过程，涉及多个步骤，包括采矿、精炼和合金化。采矿涉及将矿石从地球中移除，这可能对环境产生重大影响。一旦提取出矿石，就必须进行精炼以去除杂质并获得纯金属。这通常通过冶炼来完成，在高温下加热矿石，以分离金属与其氧化物。在精炼之后，金属可以与其他元素结合形成合金，这可以增强其特定应用的属性。金属在现代社会中的使用无处不在。从我们驾驶的汽车到我们居住和工作的建筑，金属都是基本组成部分。在电子产品中，铜和黄金等金属用于创建电路和连接，因为它们具有优良的导电性。在建筑中，钢（铁的合金）是用于结构支撑的基本材料。此外，金属在可再生能源技术中也发挥着重要作用，例如太阳能电池板和风力涡轮机，其中它们用于各种组件以提高效率和耐用性。然而，金属的提取和使用也引发了环境问题。采矿活动可能导致栖息地破坏、土壤侵蚀和水源污染。此外，金属的加工通常需要大量的能量输入，导致温室气体排放。因此，金属行业越来越强调可持续实践，例如回收利用和开发更高效的提取方法。回收金属不仅减少了对新采矿的需求，还节约了自然资源和能源。总之，金属是我们日常生活和各个行业运作不可或缺的一部分。它们独特的性质使得其在建筑、电子和可再生能源等广泛应用中发挥作用。随着我们继续依赖金属，解决与其提取和使用相关的环境挑战至关重要。通过促进可持续实践，我们可以确保未来几代人能够受益于这些宝贵资源，同时尽量减少对地球的影响。