?圆锥曲线轨道

... 有心圆锥曲线 central conic 圆锥曲线轨道 conic orbit 一条 a (rope, whip, snake, etc.); an article (of a law); a carton (of cigarettes); a bout; a row 建造一条双轨铁路 construct a double line of railway; 从a到b划一条线。 draw a line from a to b. 他是光棍一条。 his hat covers his family. 一条线拴俩蚂蚱。 one string ties two locusts.; the dooms of the two are closely linked ...