univalent

简明释义

英[ˌjuːnɪˈveɪl(ə)nt]美[jʊˈnɪvələnt]

adj. [化学][生物] 单价的；单价染色体的

英英释义

单词用法

同义词

反义词

例句

1.The univalent hydrocarbon radical, CH3-, derived from methane and occurring in many important organic compounds.

甲基单价碳氢基，ch3-，由甲烷中衍生出，在许多重要有机化合物中出现。

2.Containing three univalent basic atoms or radicals per molecule. Used of a base or salt.

三碱式的每个分子中含有三个一价碱性原子或原子团的。

3.The univalent organic radical C6H5, derived from benzene by removal of one hydrogen atom.

苯基单价有机基因，c6h5，通过去掉一个氢原子而从苯中提炼出来。

4.The result showed that bivalent and multivalent cations could be removed effectively, while the rejection of univalent cations was very low.

实验表明，所制备的纳滤膜能有效截留二价和多价阳离子，对单价阳离子的截留率极低。

5.The problems of coefficient estimates and extreme values of univalent functions are highly emphasized all the time by mathematicians from all over the world.

单叶函数的系数估计问题、极值问题研究一直倍受各国数学家高度关注。

6.In this paper, we study a generalized class of univalent functions with negative coefficients. Sharp coefficient estimates, distortion theorem and radius of convexity and starlikeness are obtained.

本文研究一类广义负系数单叶解析函数，得到了准确的系数估计，偏差定理，凸性半径和星形性半径。

7.A soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals.

一种银白色软质单价元素，碱金属属，已知最轻的金属，存在于许多矿物中。

8.The univalent 单价的 nature of certain antibodies allows them to bind specifically to one type of antigen.

某些抗体的univalent 单价的特性使它们能够特异性地结合到一种抗原上。

9.The univalent 单价的 ions are essential in the formation of certain salts.

这些univalent 单价的离子在某些盐的形成中是必不可少的。

10.In chemistry, a sodium ion is considered univalent 单价的 because it has a single positive charge.

在化学中，钠离子被视为univalent 单价的，因为它只有一个正电荷。

11.A univalent 单价的 vaccine targets only one strain of a virus.

一种univalent 单价的疫苗仅针对一种病毒株。

12.In genetics, a univalent 单价的 chromosome does not pair with another during meiosis.

在遗传学中，univalent 单价的染色体在减数分裂期间不与另一个配对。

作文

In the field of chemistry, the term univalent refers to an element or ion that has a valence of one. This means that it can form one bond with another atom or molecule. Understanding the concept of univalent elements is essential for students and professionals alike, as it lays the groundwork for more complex chemical interactions. For example, the element sodium (Na) is considered univalent because it can lose one electron to form a positive ion (Na+). This property is crucial in various chemical reactions, particularly in the formation of ionic compounds. The significance of univalent ions extends beyond simple bonding. In biological systems, many univalent ions play vital roles. Sodium and potassium, both of which are univalent, are essential for maintaining cellular function and transmitting nerve impulses. The balance between these ions is crucial for life, demonstrating how fundamental univalent elements are to our existence.Moreover, the concept of univalent can also be applied in genetics. In genetics, a univalent chromosome refers to a single chromosome that does not pair with its homologous counterpart during meiosis. This can have significant implications for genetic diversity and evolution. When organisms reproduce, the pairing of chromosomes allows for the exchange of genetic material, leading to variation. However, when a chromosome remains univalent, it may result in reduced genetic diversity and affect the overall adaptability of a species.The study of univalent elements and their interactions is not only limited to chemistry and biology but also extends to materials science. For instance, certain metals exhibit univalent characteristics, influencing their conductivity and reactivity. Understanding these properties can lead to advancements in technology, such as the development of better batteries and electronic devices. In conclusion, the term univalent encompasses a range of meanings across different scientific disciplines. Whether in chemistry, biology, or materials science, recognizing the importance of univalent elements and ions is crucial for understanding the world around us. Their ability to form bonds, influence biological processes, and impact technological advancements illustrates the interconnectedness of various fields of study. As we continue to explore the intricacies of science, the concept of univalent will undoubtedly remain a key element in our quest for knowledge.

在化学领域，术语univalent指的是具有一个价态的元素或离子。这意味着它可以与另一个原子或分子形成一个键。理解univalent元素的概念对于学生和专业人士来说至关重要，因为它为更复杂的化学相互作用奠定了基础。例如，钠元素（Na）被认为是univalent的，因为它可以失去一个电子形成一个正离子（Na+）。这一特性在各种化学反应中至关重要，特别是在离子化合物的形成过程中。univalent离子的意义不仅限于简单的结合。在生物系统中，许多univalent离子发挥着重要作用。钠和钾都是univalent的，对于维持细胞功能和传递神经冲动至关重要。这些离子之间的平衡对生命至关重要，展示了univalent元素对我们存在的基础性。此外，univalent的概念也可以应用于遗传学。在遗传学中，univalent染色体指的是在减数分裂过程中未能与其同源染色体配对的单个染色体。这可能对遗传多样性和进化产生重大影响。当生物体繁殖时，染色体的配对允许遗传物质的交换，从而导致变异。然而，当某条染色体保持univalent状态时，可能会导致遗传多样性的减少，并影响物种的整体适应能力。对univalent元素及其相互作用的研究不仅限于化学和生物学，还扩展到材料科学。例如，某些金属表现出univalent特性，影响其导电性和反应性。理解这些特性可以推动技术进步，例如开发更好的电池和电子设备。总之，术语univalent在不同科学学科中涵盖了一系列含义。无论是在化学、生物学还是材料科学中，认识到univalent元素和离子的的重要性对于理解我们周围的世界至关重要。它们形成键、影响生物过程以及对技术进步的影响，说明了各个研究领域之间的相互联系。随着我们继续探索科学的复杂性，univalent的概念无疑将在我们追求知识的过程中保持关键地位。