拐点

wén zhāng zài fēn xī hàn fèng de tè zhēng yǐ hòu cóng guǎng yì guǎi diǎn bù biàn liàng hé jiāo bǐ bù biàn yuán lǐ rù shǒu tí chū le jī yú xiàn zhuàng tè zhēng de hàn fèng pǐ pèi fāng fǎ

文章在分析焊缝的特征以后，从广义拐点不变量和交比不变原理入手，提出了基于线状特征的焊缝匹配方法。

Articles proposed a line characteristics matching method which was based on a broad inflection point invariants principle and same cross-ratio principle.

rén shēng de guǎi diǎn

人生的拐点

a turning point in one's life