几何图形

听完物理特级教师在白板上用几何图形画出的辅助推导线，困惑已久的学生们顿时恍然大悟、豁然开朗。

tīng wán wù lǐ tè jí jiào shī zài bái bǎn shàng yòng jǐ hé tú xíng huà chū de fǔ zhù tuī dǎo xiàn, kùn huò yǐ jiǔ de xué shēng men dùn shí huǎng rán dà wù, huò rán kāi lǎng.

After listening to the auxiliary derivation lines drawn by the physics master teacher using geometric figures on the whiteboard, the students who had been confused for a long time suddenly became enlightened and enlightened.

在计算机三维辅助设计建模软件中，工程师熟练地拖拽编辑着复杂的零件三维空间几何图形。

zài jì suàn jī sān wéi fǔ zhù shè jì jiàn mó ruǎn jiàn zhōng, gōng chéng shī shú liàn dì tuō zhuāi biān jí zhe fù zá de líng jiàn sān wéi kōng jiān jǐ hé tú xíng.

In computer-aided design and modeling software, engineers skillfully drag and edit complex three-dimensional spatial geometry of parts.