protractor

简明释义

英[prəˈtræktə(r)]美[prəˈtræktərˌproʊˈtræktər]

n. 伸肌；分度器；伤处异物摘出器

复 数 p r o t r a c t o r s

英英释义

单词用法

同义词

反义词

例句

1.Use your protractor to construct an equilateral triangle.

用量角器作一个等边三角形。

2.The compasses marking leg is also an edge of the protractor at the same time, and is taken as the compasses marking leg to use after being extended.

圆规划线腿同时也是量角器的一个边，经延长即作为圆规划线腿使用。

3.BEVEL PROTRACTOR: a tool for measuring an Angle or marking angles.

量角器：一种可以测量和标记角度的工具。

4.A localization algorithm based on visual protractor was proposed in order to solve the problem of mobile robot localization in outdoor environments.

针对移动机器人在室外环境中的定位提出了一种基于视觉量角计的定位算法。

5.It is an all-in-one program that provides full-featured screen capture tool, intuitive image editor, color picker, color palette, pixel ruler, protractor, crosshair and even whiteboard.

它是所有功能于一身的的程序，提供功能全面的屏幕捕捉工具，直观的图像编辑器，颜色选择器，调色板，像素尺，量角器，十字线，甚至白板。

6.The double-sided protractor comprises two identical protractors and is structurally characterized in that a rotating shaft is arranged in the center ofthe two overlapped protractors.

本实用新型包括两个相同的量角 器，其结构要点是在上下两个叠加量角器的中心上设置有转轴。

7.This article introduces the methods of measuring geography latitude with the single tools, such as steel tape measure, protractor.

介绍了利用钢卷尺和量角器等简单工具测量地理纬度的方法。

8.Objective To study the diagnostic value of pulmonary carcinoma via fibrobronchoscope brush biopsy, protractor biopsy and sputum cytology.

目的探讨纤维支气管镜刷检、活检和痰检对肺癌的诊断价值。

9.Excuse me, Sir. What does this protractor read?

抱歉先生，这个量角器是怎么读的？

10.In geometry class, we learned how to measure angles using a protractor.

在几何课上，我们学习了如何使用量角器来测量角度。

11.To draw a perfect triangle, you need a protractor to ensure the angles are accurate.

要画一个完美的三角形，你需要一个量角器来确保角度的准确性。

12.The architect used a protractor to create precise designs for the new building.

建筑师使用量角器为新建筑设计精确的图纸。

13.When constructing a model, I found my protractor essential for measuring the angles.

在制作模型时，我发现我的量角器对测量角度至关重要。

14.You can find a protractor in most school supply kits.

你可以在大多数文具包中找到一个量角器。

作文

In mathematics, particularly in geometry, accurate measurements are essential for constructing shapes and solving problems. One of the most important tools used by students and professionals alike is the protractor, a device designed to measure angles. The protractor is typically a semi-circular or circular tool marked with degrees from 0 to 180 or 0 to 360, depending on its design. This instrument allows users to determine the size of an angle with precision, which is crucial in various fields such as engineering, architecture, and even art. Understanding how to use a protractor is fundamental for anyone studying geometry. To use a protractor, one must first place the center point of the protractor at the vertex of the angle being measured. Then, the baseline of the protractor should align with one side of the angle. After positioning it correctly, the user can read the degree measurement where the other side of the angle intersects the numbered scale of the protractor. This simple yet effective method enables students to grasp the concepts of angles and their measurements. The protractor is not only useful in academic settings but also plays a vital role in real-world applications. For instance, architects use protractors to ensure that their designs meet specific angle requirements, which is critical for the structural integrity of buildings. Similarly, engineers rely on protractors when drafting plans for various projects, ensuring that all angles are accurate to avoid potential issues during construction. Moreover, the protractor can also be a fun and engaging tool in educational settings. Teachers often incorporate hands-on activities involving protractors to help students visualize and understand angles better. For example, students might be tasked with creating geometric shapes using a protractor to measure angles accurately, fostering both creativity and analytical skills. In addition to traditional protractors, technology has introduced digital alternatives that offer enhanced features. Digital protractors can provide instant readings and even connect to software that assists in more complex calculations. These advancements make it easier for users to obtain precise measurements and apply them in various contexts. Despite the emergence of digital tools, the classic protractor remains a staple in classrooms around the world. Its simplicity and effectiveness make it an invaluable resource for learning and practicing geometry. As students progress in their studies, they will encounter more complex concepts that build upon the foundational knowledge gained through the use of a protractor. In conclusion, the protractor is an essential tool in the study of geometry, providing a straightforward means of measuring angles. Its applications extend beyond the classroom into various professional fields, making it a versatile instrument. Whether used in architectural designs, engineering projects, or educational activities, the protractor continues to play a significant role in understanding and applying geometric principles. Mastering the use of a protractor not only enhances one's mathematical skills but also prepares individuals for future challenges in both academic and professional environments.

在数学中，特别是在几何学中，准确的测量对于构造形状和解决问题至关重要。学生和专业人士都使用的最重要工具之一是量角器，这是一种用于测量角度的设备。量角器通常是一个半圆形或圆形的工具，标有从0到180或从0到360的度数，具体取决于其设计。该仪器使用户能够精确地确定角度的大小，这在工程、建筑甚至艺术等各个领域都至关重要。 了解如何使用量角器是任何学习几何学的人都必须掌握的基础技能。要使用量角器，首先必须将量角器的中心点放置在所测量角度的顶点上。然后，量角器的基线应与角度的一侧对齐。在正确定位后，用户可以读取角度的另一侧与量角器标尺相交的度数。这种简单而有效的方法使学生能够掌握角度及其测量的概念。 量角器不仅在学术环境中有用，而且在现实世界的应用中也发挥着重要作用。例如，建筑师使用量角器以确保他们的设计符合特定的角度要求，这对建筑物的结构完整性至关重要。同样，工程师在起草各种项目的计划时也依赖于量角器，确保所有角度都准确，以避免在施工过程中可能出现的问题。 此外，量角器也可以成为教育环境中有趣且引人入胜的工具。教师经常在课堂活动中结合使用量角器，帮助学生更好地可视化和理解角度。例如，学生可能会被要求使用量角器准确测量角度来创建几何形状，培养创造力和分析能力。 除了传统的量角器，技术还推出了数字替代品，提供增强的功能。数字量角器可以提供即时读数，甚至可以连接到辅助复杂计算的软件。这些进步使用户更容易获得精确的测量，并将其应用于各种上下文中。 尽管数字工具的出现，经典的量角器仍然是全球教室中的主流。它的简单性和有效性使其成为学习和实践几何学的重要资源。随着学生在学习中的进步，他们将遇到更多建立在使用量角器获得的基础知识上的复杂概念。 总之，量角器是学习几何学的重要工具，提供了一种简单的方法来测量角度。它的应用超越了课堂，进入了各个专业领域，使其成为一种多用途的工具。无论是在建筑设计、工程项目还是教育活动中，量角器继续在理解和应用几何原理方面发挥重要作用。掌握量角器的使用不仅提高了一个人的数学技能，还为个人在学术和职业环境中面临的未来挑战做好了准备。