perimeters

简明释义

英[pəˈrɪmɪtəz]美[pəˈrɪmɪtərz]

[数] 周长

英英释义

单词用法

同义词

反义词

例句

1.The perimeters of all boards are fitted with aluminium banding which protects the edges of the board during general usage and transportation.

所有议会的周长与铝的保护带一般使用和运输过程中对板边安装。

2.The menu controls along the bottom and right perimeters are Boolean controls with customized appearance and embedded text.

位于底部和右边缘的都是它的菜单控件。这些控件全是自定义风格的布尔类型，且内部都有文字标签。

3.Although the building perimeters, columns and ceiling heights were already established, there was enough freedom to determine the look and flow of the rooms.

尽管建筑物的周长、立柱以及天花板高度都已经确立了，但是仍然有足够的自由度来定义房间的外观及流通。

4.The forest landscape elements cover a quite large area, nevertheless, the areas of various elements are extremely uneven, and their perimeters demonstrate the same regularity as well.

核心区内森林景观要素面积较大，但各景观要素之间的面积分配极不均匀，周长也表现出相同的规律。

5.The areas and perimeters of these quartz grains were calculated by GIS-based technologies.

并计算出每颗石英的周长和面积。

6.We can follow the railway lines through the security perimeters and into the elite compounds.

跟着铁路线穿过保安区就进入了核心地带。

7.Thermal SightSensors provide clear, detailed thermal images and can detect intrusions across site perimeters, enclaves, and outdoor areas in any light.

热成像传感器可以提供清晰，详细的热成像并且可以在任何光线下对周边和户外环境进行入侵探测。

8.To calculate the area of the park, we first need to measure the perimeters of its boundaries.

为了计算公园的面积，我们首先需要测量其边界的周长。

9.The city council decided to increase the lighting along the perimeters of the playground.

市议会决定增加游乐场周边的照明。

10.The architect designed a fence that would define the perimeters of the garden.

建筑师设计了一道围栏来界定花园的边界。

11.The security team installed cameras around the perimeters of the building to enhance safety.

保安团队在大楼的周边安装了摄像头以增强安全性。

12.During the race, participants were required to stay within the perimeters marked on the track.

在比赛期间，参与者必须保持在赛道上标记的边界内。

作文

In mathematics, the term perimeters refers to the total distance around the edge of a two-dimensional shape. Understanding perimeters is crucial not only in geometry but also in various real-world applications. For instance, when planning a garden, one must calculate the perimeters to determine how much fencing is needed to enclose the area. This concept can be extended to various shapes, including rectangles, circles, and polygons, each having its unique formula for calculating the perimeters. For a rectangle, the perimeter is calculated by adding together the lengths of all four sides. The formula is given as P = 2(length + width). This means if you have a rectangular garden that is 10 meters long and 5 meters wide, the perimeter would be P = 2(10 + 5) = 30 meters. Knowing this allows gardeners and landscapers to purchase the right amount of materials without overspending or running short. Circles, on the other hand, require a different approach. The perimeter of a circle is commonly referred to as the circumference, which can be calculated using the formula C = 2πr, where r is the radius of the circle. For example, if the radius of a circular pond is 3 meters, the perimeter would be C = 2π(3) ≈ 18.85 meters. This calculation is essential for tasks such as installing a circular path or determining the amount of material needed for landscaping projects.In addition to practical applications, understanding perimeters also enhances critical thinking and problem-solving skills. When students learn to calculate the perimeters of various shapes, they develop a deeper understanding of spatial relationships and the properties of geometric figures. This knowledge is foundational for more advanced topics in mathematics and science, including calculus and physics. Moreover, the concept of perimeters can be applied beyond mere calculations. In urban planning, for instance, city planners consider the perimeters of parks and recreational areas to ensure they are adequately sized and accessible for community use. By analyzing the perimeters of these spaces, planners can create environments that promote health and well-being among residents. In conclusion, the concept of perimeters is not only a fundamental aspect of geometry but also a vital tool in everyday life. From gardening to urban planning, understanding how to calculate and apply perimeters can lead to more efficient and effective decision-making. As we continue to engage with mathematics, let us appreciate the role that perimeters play in shaping our world and enhancing our lives.

在数学中，术语周长指的是二维形状边缘的总距离。理解周长不仅在几何学中至关重要，而且在各种现实应用中也非常重要。例如，在规划花园时，必须计算周长以确定围绕区域所需的围栏数量。这个概念可以扩展到各种形状，包括矩形、圆形和多边形，每种形状都有其独特的计算周长的公式。对于矩形，周长是通过将四条边的长度相加来计算的。公式为P = 2（长度 + 宽度）。这意味着如果你有一个长10米、宽5米的矩形花园，则周长将为P = 2（10 + 5）= 30米。了解这一点可以让园丁和景观设计师购买合适数量的材料，而不会超支或短缺。另一方面，圆形需要不同的方法。圆的周长通常称为周长，可以使用公式C = 2πr来计算，其中r是圆的半径。例如，如果一个圆形池塘的半径是3米，则周长将为C = 2π（3）≈ 18.85米。这一计算对于安装圆形小路或确定景观项目所需材料的数量至关重要。除了实际应用，理解周长还增强了批判性思维和解决问题的能力。当学生学习计算各种形状的周长时，他们对空间关系和几何图形的性质有了更深刻的理解。这一知识是更高级的数学和科学主题的基础，包括微积分和物理学。此外，周长的概念不仅限于简单的计算。在城市规划中，例如，城市规划者会考虑公园和休闲区的周长，以确保它们的大小和可达性适合社区使用。通过分析这些空间的周长，规划者可以创造出促进居民健康和福祉的环境。总之，周长的概念不仅是几何学的基本方面，也是日常生活中的重要工具。从园艺到城市规划，理解如何计算和应用周长可以带来更高效和有效的决策。随着我们继续参与数学，让我们欣赏周长在塑造我们的世界和改善我们的生活中所扮演的角色。