principal point meaning in English
象主点
主点
Examples
- The principal points of a thin lens coincide at the center of the lens .
薄透镜的两个主点与透镜中心相重合。 - Those are the principal points i want to explain to everybody
这些便是我要向大家解释的要点。 - On principal points in construction technique of concrete - rubble gravity dam
浅谈砼砌石重力坝施工技术要点 - Secondary principal point
第二主点 - Primary principal point
第一主点