锐角

锐角 [ruì jiǎo]

1. ■ acute angle; closed angle; obtuse angle

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常用词组

1. ■ 锐角螺纹 {机} sharp thread;

2. ■ 锐角坡口 under bevel;

3. ■ 锐角三角形 {数} oxygon; acute triangle