diameter

简明释义

英[daɪˈæmɪtə(r)]美[daɪˈæmɪtər]

n. 直径；放大倍数

复 数 d i a m e t e r s

英英释义

单词用法

同义词

反义词

例句

1.The negatively charged region is large: several hundred meters thick and several kilometers in diameter.

带负电荷的区域非常大：数百米厚，直径达几千米。

2.The maximum penetration depth of gas flow is increased with the increase of gas momentum while the diameter of oxigen gunjet keeps constant.

气流的最大穿透深度随气体动量的增加而增加，而氧气喷枪的直径保持恒定。

3.The large-diameter metal pipe connects the bell nipple to the possum belly.

大口径金属管道把钟形导向短节与泥浆储罐连接起来。

4.The crown of thorns starfish is large, twenty-five to thirty-five centimeters in diameter, and has seven to twenty-one arms that are covered in spines.

棘冠海星很大，直径长达25到35厘米，有7到21条手臂，上面布满了刺。

5.On Mars, there are relatively few craters less than 5 kilometers in diameter.

在火星上，直径小于5公里的陨石坑相对较少。

6.Atlas, the flatter of the two, has a diameter of only 18 kilometers from pole to pole but is almost 40 kilometers across its waist.

阿特拉斯是两者中较平整的一个，极点间的直径只有18公里，但它的赤道周长却有40公里。

7.The wheel has a diameter of 50 inches.

这个轮子的直径是50英寸。

8.The diameter of the circle is 10 cm.

这个圆的直径是10厘米。

9.A larger diameter means a bigger surface area.

更大的直径意味着更大的表面积。

10.To find the area of a circle, you need to know its diameter.

要计算一个圆的面积，你需要知道它的直径。

11.The diameter of the pipe is crucial for water flow.

管道的直径对水流至关重要。

作文

Understanding the concept of diameter is essential in both mathematics and everyday life. The term diameter refers to a straight line segment that passes through the center of a circle, connecting two points on its circumference. This definition not only applies to circles but also extends to spheres and other round shapes. The importance of diameter can be observed in various fields such as engineering, architecture, and even art. In mathematics, the diameter is a fundamental concept that helps in calculating the area and circumference of a circle. The formula for the circumference of a circle is given by C = πd, where d is the diameter. Knowing the diameter allows one to easily determine the circumference, which is crucial in many practical applications, such as designing wheels or circular tracks. Similarly, the area of a circle can be calculated using the formula A = π(r^2), where r is the radius, which is half of the diameter. Thus, understanding the diameter provides a foundation for comprehending more complex geometrical concepts.In engineering, the diameter plays a critical role in the design and analysis of various structures. For instance, when constructing pipes, knowing the diameter is vital for determining the flow rate of liquids. A larger diameter typically allows for a greater volume of liquid to pass through in a given time, which can be crucial for systems that require efficient fluid transport. Similarly, in the field of mechanical engineering, the diameter of gears and pulleys must be precisely measured to ensure proper functioning and compatibility within machines.Architecture also relies heavily on the understanding of diameter. When designing circular buildings, domes, or columns, architects must consider the diameter to maintain structural integrity and aesthetic appeal. The visual impact of a building can change dramatically with variations in diameter, influencing how light enters the space and how people interact with it. Therefore, the diameter is not just a measurement; it is a crucial element that affects both functionality and beauty in architectural design.Art is another domain where the diameter holds significance. Artists often use circles in their work, whether in paintings, sculptures, or installations. Understanding the diameter allows artists to create balanced and harmonious compositions. For example, in mandala art, the precise measurement of the diameter is essential for creating symmetrical patterns that are visually pleasing and spiritually meaningful.In conclusion, the concept of diameter extends far beyond the confines of mathematics. It is a versatile term that finds applications in engineering, architecture, and art. By grasping the importance of diameter, individuals can enhance their understanding of various disciplines and appreciate the interconnectedness of these fields. Whether one is calculating the circumference of a circle, designing a pipe system, or creating a piece of art, the diameter remains a fundamental aspect that influences outcomes significantly.

理解直径的概念在数学和日常生活中都是至关重要的。术语直径指的是一条通过圆心的直线段，连接圆周上的两个点。这个定义不仅适用于圆，还扩展到球体和其他圆形物体。直径的重要性可以在工程、建筑甚至艺术等多个领域中观察到。在数学中，直径是一个基本概念，有助于计算圆的面积和周长。圆的周长公式为C = πd，其中d是直径。知道直径后，可以轻松确定周长，这在许多实际应用中至关重要，例如设计轮子或圆形跑道。同样，圆的面积可以使用公式A = π(r^2)计算，其中r是半径，即直径的一半。因此，理解直径为理解更复杂的几何概念提供了基础。在工程中，直径在各种结构的设计和分析中发挥着关键作用。例如，在建造管道时，了解直径对于确定液体的流速至关重要。较大的直径通常允许在给定时间内通过更大的液体体积，这对于需要高效流体运输的系统至关重要。同样，在机械工程领域，齿轮和滑轮的直径必须精确测量，以确保机器的正常运转和兼容性。建筑也在很大程度上依赖于对直径的理解。在设计圆形建筑、穹顶或柱子时，建筑师必须考虑直径以保持结构完整性和美学吸引力。建筑的视觉影响会因直径的变化而显著改变，影响光线如何进入空间以及人们如何与之互动。因此，直径不仅仅是一个测量值；它是影响建筑设计功能和美感的关键元素。艺术是另一个直径具有重要意义的领域。艺术家在其作品中经常使用圆形，无论是在画作、雕塑还是装置中。理解直径使艺术家能够创造平衡和谐的构图。例如，在曼陀罗艺术中，直径的精确测量对于创建对称的图案至关重要，这些图案在视觉上令人愉悦并富有精神意义。总之，直径的概念远远超出了数学的范围。它是一个多功能的术语，在工程、建筑和艺术中都有应用。通过掌握直径的重要性，个人可以增强对各个学科的理解，并欣赏这些领域之间的相互联系。无论是计算圆的周长、设计管道系统，还是创作艺术作品，直径始终是一个影响结果的重要方面。