the principal focus的意思|示意
主要关注点
the principal focus的网络常见释义
主焦点 ∠the principal focus主焦点 ∠The problem of pollution became the focus of public attention.污染问题成了公众关注的焦点。
the principal focus相关短语
1、 the principal focus system 主聚焦系统
the principal focus相关例句
Focal length: The distance between the centre of a lens and its principal focus.
焦距：镜头中心与其主焦点的距离。
Focal length is the distance between optical centre and principal focus.
焦距就是镜片中心和焦点之间的距离。