*Vertices 3 1 "固体火箭技术" 0.0 0.0 0.0 x_fact 13.851351 y_fact 30.405405 2 "宇航材料工艺" 0.0 0.0 0.0 x_fact 4.729730 y_fact 22.972973 3 "推进技术" 0.0 0.0 0.0 x_fact 5.405405 y_fact 46.621622 *Matrix 0.000000 0.286302 0.668443 0.286302 0.000000 0.000000 0.668443 0.000000 0.000000