internal common tangent plane内: inner; inside; within公: state-owned; collective; pub ...切面: tangent plane section cut no ...内公切线: inner common tangent; inner tangent common; internal common tangent外公切面: external common tangent plane下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:内公切面，即可在微信中查询翻译
