evolve的名词形式是什么

evolve的名词形式是evolvent，evolvent中文意思是n. 渐开线；渐伸线；切展线

The gear profile was designed with simple proximate drawing using proximate arcograph to instead of evolvent in the past.齿轮齿形设计多采用简易的近似划法-用近似圆弧代替渐开线。

evolve和revolve区别

evolve，v.发展;进化;(使)逐渐形成;逐渐演变;

例句，The company has evolved into a major chemical manufacturer.

这家公司已逐步发展成一个主要的化工厂。

revolve ，vi.旋转;环绕;转动;

例句，The mixture flows to a revolving drum where the water is filtered out.

混合剂流过旋转着的滚筒时水分便从中滤出。