tetrahedral

简明释义

英[ˌtetrəˈhiːdrəl]美[ˌtetrəˈhiːdrəl]

adj. 四面体的；有四面的

英英释义

单词用法

同义词

反义词

例句

1.Inner- and outer-sphere surface complexes of all such three cations with tetrahedral and octahedral charge sites were observed in the one-layer hydrates.

一层水合物中可以观察到三种阳离子都能和四面体电荷与八面体电荷位置分别形成内、外配位作用。

2.In the end of the paper, a tunnel excavated under a rock slope is modeled by tetrahedral elements, the example demonstrate the validity of above methods.

最后本文用一边坡洞室开挖的算例验证了编制程序的有效性。

3.Common examples include solid linear brick and solid parabolic tetrahedral elements.

常见的例子包括固体线性抛砖和固体四面体组成部分。

4.Computer deconvolutions of the Raman spectra allow the percent of tetrahedral hydrogen bonded structure of water to be determined.

对所得到的拉曼光谱进行了计算机去卷积处理，并由此计算了不同溶液中水的四面体结构的百分数。

5.Compared with triangular meshes, tetrahedral meshes tend to have a larger proportion of poor quality elements and to have elements that are more severely distorted.

相对于三角形网格，四面体网格质量差的单元所占的比例更大、严重变形的单元更多。

6.The researchers poured tetrahedral dice into containers which they shook until completely full.

研究者把许多四面体状的骰子放进一个容器，晃动容器直至装满。

7.The invention further comprises the filling machine and a system comprising the filling machine which comprises a device for positioning the tetrahedral packing pieces.

该发明进一步包括填充机器以及包含该填充机器的系统，它们包括用于定位四面体状包装件的设备。

8.Two methods were applied to fit surfaces of the tetrahedral gap of an intermeshing co-rotating twin-screw extruder. The surfaces are irregular border's parameter domain.

文中利用了两种对非规则边界参数区域进行拟合的方法，对同向双螺杆挤出机四面体间隙进行了拟合，并建立了一种曲面拟合误差测量的新方法；

9.His work with tetrahedral kites led to the development of this flying machine a few years before 1910.

1910年前，他在四面体风筝方面的研究，导致了这艘飞行器的开发。

10.In geometry, a tetrahedral shape consists of four triangular faces.

在几何学中，四面体形状由四个三角形面组成。

11.The carbon atom in methane is tetrahedral, bonded to four hydrogen atoms.

甲烷中的碳原子是四面体形状，与四个氢原子相连。

12.In crystallography, some minerals exhibit a tetrahedral coordination of their metal ions.

在晶体学中，一些矿物表现出金属离子的四面体配位。

13.The molecule has a tetrahedral structure that allows for optimal bonding angles.

该分子具有四面体结构，能够实现最佳的键角。

14.The tetrahedral arrangement of atoms can influence the physical properties of materials.

四面体原子的排列可以影响材料的物理性质。

作文

In the world of chemistry and molecular geometry, the term tetrahedral refers to a specific arrangement of atoms in a molecule. A tetrahedral shape is one where a central atom is surrounded by four other atoms positioned at the corners of a tetrahedron. This geometric configuration is crucial in understanding how molecules interact with each other, particularly in organic chemistry. For instance, the methane molecule (CH4) is a classic example of a tetrahedral structure. In methane, one carbon atom is bonded to four hydrogen atoms, creating a three-dimensional shape that maximizes the distance between the hydrogen atoms due to repulsion between their electron clouds.The significance of the tetrahedral structure extends beyond simple molecular models; it plays a pivotal role in the properties and reactivity of compounds. The angles between the bonds in a tetrahedral molecule are approximately 109.5 degrees, which is essential for predicting the behavior of organic compounds. For example, the tetrahedral arrangement allows for the possibility of isomerism, where molecules with the same formula can have different structures and properties due to variations in their spatial arrangements.Moreover, the concept of tetrahedral geometry is not limited to just hydrocarbons. Many biological molecules, such as amino acids and nucleotides, exhibit tetrahedral characteristics. The chirality of certain amino acids arises from their tetrahedral centers, where the arrangement of atoms around a central carbon atom leads to two enantiomers, or mirror-image forms. This chirality is fundamental in biochemistry, influencing how enzymes interact with substrates and how drugs are designed to target specific biological pathways.In addition to its importance in chemistry, the tetrahedral shape also appears in various fields such as materials science and crystallography. For example, silicon dioxide (SiO2), commonly known as quartz, has a tetrahedral arrangement in its crystal structure, contributing to its hardness and stability. Understanding the tetrahedral arrangement in crystalline solids helps scientists develop new materials with desirable properties for technological applications.The study of tetrahedral shapes is also relevant in the field of architecture and engineering. The principles of tetrahedral geometry can be applied to create strong and lightweight structures. Architects often use tetrahedral frameworks in design to ensure stability while minimizing material usage. This innovative approach not only enhances the aesthetic appeal of buildings but also contributes to sustainability by reducing the environmental impact of construction.In conclusion, the term tetrahedral encapsulates a fundamental concept in chemistry that is vital for understanding molecular interactions, biological functions, and material properties. Its implications stretch across various scientific disciplines and practical applications, highlighting the interconnectedness of geometry and the natural world. By grasping the significance of tetrahedral structures, we can appreciate the complexity and beauty of the molecular universe and its influence on our daily lives.

在化学和分子几何学的世界中，术语tetrahedral指的是分子中原子的特定排列。tetrahedral形状是一个中心原子被四个其他原子围绕，这些原子位于四面体的角落。这种几何配置对于理解分子之间的相互作用至关重要，特别是在有机化学中。例如，甲烷分子（CH4）就是tetrahedral结构的经典例子。在甲烷中，一个碳原子与四个氢原子结合，形成一个三维形状，最大限度地增加氢原子之间的距离，这是由于它们电子云之间的排斥作用。tetrahedral结构的重要性不仅限于简单的分子模型；它在化合物的性质和反应性中扮演着关键角色。tetrahedral分子中键之间的角度大约为109.5度，这对于预测有机化合物的行为至关重要。例如，tetrahedral排列允许异构现象的可能性，即具有相同化学式的分子可以由于空间排列的变化而具有不同的结构和性质。此外，tetrahedral几何概念并不仅限于烃类。许多生物分子，如氨基酸和核苷酸，表现出tetrahedral特征。某些氨基酸的手性源于其tetrahedral中心，其中围绕中心碳原子的原子排列导致两种对映体或镜像形式。这种手性在生物化学中至关重要，影响酶与底物的相互作用以及药物针对特定生物途径的设计。除了在化学中的重要性外，tetrahedral形状还出现在材料科学和晶体学等多个领域。例如，二氧化硅（SiO2），通常称为石英，在其晶体结构中具有tetrahedral排列，这有助于其硬度和稳定性。理解晶体固体中的tetrahedral排列有助于科学家开发具有理想性能的新材料，以用于技术应用。tetrahedral形状的研究在建筑和工程领域也具有相关性。tetrahedral几何原理可用于创建坚固且轻便的结构。建筑师经常在设计中使用tetrahedral框架，以确保稳定性，同时最小化材料使用。这种创新方法不仅增强了建筑的美感，还通过减少建筑对环境的影响来促进可持续发展。总之，术语tetrahedral概括了化学中的一个基本概念，对于理解分子相互作用、生物功能和材料性质至关重要。它的影响跨越多个科学学科和实际应用，突显了几何与自然界的相互关联。通过掌握tetrahedral结构的重要性，我们可以欣赏分子宇宙的复杂性和美丽，以及它对我们日常生活的影响。