单词
focal
英 ['fəʊk(ə)l] 美['fokl]
基本信息
  • adj. 焦点的,在焦点上的;灶的,病灶的
低频词扩展词汇

英英释意

1. having or localized centrally at a focus;
"focal point"
"focal infection"
2. of or relating to a focus;
"focal length"