protractor是什么意思
- 英式英标[prə\'træktɚ]
- 美式音标[prə\'træktə]
中文词源
protractor 量角器，分度规
来自protract,拖延，延长。
英文词源
- protractor (n.)
- 1610s, "one who lengthens (an action)," from Medieval Latin protractor, agent noun from Latin protrahere "to draw forward" (see protraction); sense of "instrument for drawing angles" first recorded 1650s.
实用例句
- 1. Use your protractor to construct an equilateral triangle.
- 用量角器作一个等边三角形.来自《简明英汉词典》
- 2. This compass serves as a protractor.
- 这个罗盘可用作分度规.来自辞典例句
- 3. To draw to scale by means of a scale and protractor; plot.
- 测绘用圆规和量角器划线和角; 标绘.来自互联网
- 4. Screen angle indicator: A protractor with many co - centre circles.
- 网角指示器: 是一个带有很多同心圆的量角器.来自互联网
- 5. I can't find my protractor.
- 我找不到我的半圆仪了.来自互联网
