短語詞組短語principal neutral point [數(shù)]主中心點(diǎn)principal triangulation point 一等三角點(diǎn)principal vanishing point [測(cè)][攝]主郃點(diǎn);主滅點(diǎn)principal object point 物方帚principal -point assumption 假定主點(diǎn)principal focal point 主焦點(diǎn)principal control point 主要控制點(diǎn)anterior principal focal point 前主焦點(diǎn)posterior principal focal point 後焦點(diǎn) 返回 principal point