7 2.410 592 1/2 5 1.357 0.333 1/71/5 0.306 0.075 PP2P。WW P11131703620081 15084308 3.271 0.731I2 P1 P2 P3 Wi Wi o P1 1 2 7 2.410 0.592 P2 1/2 1 5 1.357 0.333 P3 1/7 1/5 1 0.306 0.075 I3 P1 P2 P3 Wi Wi o P1 1 1/3 1/7 0.362 0.081 P2 3 1 1/5 0.843 0.188 P3 7 5 1 3.271 0.731