doubly ruled surface

doubly ruled surface是什么意思 doubly ruled surface怎么读 doubly ruled surface在线翻译 doubly ruled surface中文意思 doubly ruled surface的解释 doubly ruled surface的发音 doubly ruled surface意思是什么 doubly ruled surface怎么翻译 doubly ruled surface的中文翻译 doubly ruled surface的意思翻译 doubly ruled surface在线翻译查询 给力英汉词典