protractor

英 [prə'træktə]美 [prə'træktɚ]

n. 伸肌；分度器；伤处异物摘出器

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.

双语例句

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

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