nonmetal

简明释义

英[ˌnɒnˈmetəl]美[ˌnɑːnˈmetəl]

n. 非金属（元素）

英英释义

单词用法

同义词

反义词

例句

1.Conclusion Medical history and imaging manifestation were the main approaches to diagnose nonmetal foreign body in trachea and bronchus.

结论病史及影像学表现是诊断气管、支气管非金属异物的主要手段。

2.Can be widely used in engraving all kinds of nonmetal materials.

适用于多种非金属雕刻，用途十分广泛。

3.Calcium carbonate is a very common nonmetal material that exists in nature widely, and is a traditional inorganic salt product of chemical industry.

碳酸钙是自然界广泛存在的一种很普通的非金属材料，也是一种传统的无机盐化工产品。

4.In this paper, we will introduce an accurate and stable method which bases on mot to solve dielectric objects and metal - nonmetal composite objects.

在本文文章中，介绍了一种基于时间步进法求解介质目标、金属非金属组合目标时域积分方程的精确，稳定的方法。

5.Objective to study the imaging manifestation of nonmetal foreign body in trachea and bronchus, and to increase the early diagnosis ratio.

目的探讨气管、支气管非金属异物的影像学表现，提高对该病的早期诊断率。

6.How does the mechanism of oxidation and reduction reaction proceed between nitric with metal and nonmetal?

硝酸跟金属、非金属发生氧化还原反应的历程是怎样进行的？

7.In chemistry class, we learned that a nonmetal 非金属 can gain electrons easily.

在化学课上，我们了解到一个非金属可以很容易地获得电子。

8.Oxygen is a vital nonmetal 非金属 that supports life.

氧气是支持生命的重要非金属。

9.Sulfur is an example of a nonmetal 非金属 that is essential for many biological processes.

硫是一个对许多生物过程至关重要的非金属的例子。

10.The periodic table categorizes elements into metals and nonmetals 非金属.

元素周期表将元素分为金属和非金属。

11.Carbon, as a nonmetal 非金属, is fundamental to organic chemistry.

碳作为一个非金属，是有机化学的基础。

作文

In the world of chemistry, elements are broadly categorized into metals and nonmetals. Understanding the properties and significance of these categories is crucial for students and professionals alike. One of the key classifications is nonmetal, which refers to elements that typically lack the characteristics of metals. These elements are generally poor conductors of heat and electricity, and they often have lower melting and boiling points compared to metals. Common examples of nonmetals include oxygen, nitrogen, sulfur, and carbon. The role of nonmetals in nature and industry cannot be overstated. For instance, oxygen is essential for respiration in living organisms, while nitrogen is a critical component of amino acids and proteins. Furthermore, nonmetals like carbon form the backbone of organic chemistry, allowing for the formation of countless compounds necessary for life. In contrast to metals, which tend to lose electrons and form positive ions, nonmetals usually gain or share electrons to achieve stable electron configurations. This behavior leads to the formation of covalent bonds, which are fundamental in creating molecular structures. For example, the combination of hydrogen and oxygen to form water (H2O) is a classic illustration of how nonmetals interact to create essential compounds. Moreover, nonmetals exhibit a variety of physical states at room temperature; while some are gases like oxygen and nitrogen, others are solids such as sulfur and phosphorus. This diversity in state and properties makes nonmetals incredibly versatile and vital for numerous applications. In the realm of technology, nonmetals also play a significant role. Silicon, a nonmetal, is a fundamental component in electronics and computer technology, forming the basis for semiconductors. The ability to manipulate the properties of nonmetals has led to advancements in materials science, enabling the development of new polymers and composites that have transformed industries ranging from construction to aerospace. On an environmental level, nonmetals are equally important. Elements like sulfur and phosphorus are essential nutrients for plants, playing a critical role in agriculture and food production. However, it is vital to manage their use carefully, as excessive application can lead to pollution and ecological imbalances. In conclusion, the classification of elements into metals and nonmetals is more than just a scientific distinction; it reflects the diverse roles that these elements play in our world. From supporting life processes to driving technological innovation, nonmetals are indispensable. As we continue to explore and understand the properties of nonmetals, we unlock new possibilities for sustainable development and environmental stewardship. Recognizing the value of nonmetals is essential for advancing both science and society as a whole.

在化学的世界里，元素被广泛分类为金属和非金属。理解这些类别的特性和重要性对学生和专业人士来说至关重要。其中一个关键的分类是非金属，指的是通常缺乏金属特性的元素。这些元素通常是热和电的导体差，且其熔点和沸点通常低于金属。常见的非金属包括氧、氮、硫和碳。 非金属在自然界和工业中的作用不可小觑。例如，氧气是生物体呼吸所必需的，而氮是氨基酸和蛋白质的重要组成部分。此外，像碳这样的非金属构成了有机化学的基础，使得形成无数生命所需的化合物成为可能。 与倾向于失去电子并形成正离子的金属相比，非金属通常通过获得或共享电子来实现稳定的电子配置。这种行为导致了共价键的形成，而共价键在创建分子结构中是基础性的。例如，氢和氧结合形成水（H2O）就是一个经典的例子，说明了非金属如何相互作用以创建基本化合物。 此外，非金属在室温下表现出多种物理状态；一些是气体，如氧和氮，另一些是固体，如硫和磷。这种状态和性质的多样性使得非金属极具多功能性，并且对许多应用至关重要。 在技术领域，非金属同样发挥着重要作用。硅是一种非金属，是电子和计算机技术的基本组成部分，构成了半导体的基础。操纵非金属的特性使得材料科学取得了进展，促使新聚合物和复合材料的开发，这些材料已经改变了从建筑到航空航天等多个行业。 在环境层面上，非金属同样重要。像硫和磷这样的元素是植物的重要营养素，在农业和食品生产中起着关键作用。然而，必须谨慎管理它们的使用，因为过量施用可能导致污染和生态失衡。 总之，将元素分类为金属和非金属不仅仅是科学上的区分；它反映了这些元素在我们世界中扮演的多样角色。从支持生命过程到推动技术创新，非金属是不可或缺的。随着我们继续探索和理解非金属的特性，我们为可持续发展和环境管理开启了新的可能性。认识到非金属的价值对于推动科学和社会的整体进步至关重要。