输入层		输出层
σ_m (Mpa)	σ_a (Mpa)	2N_f
3.6	218	135,340
1.3	237	28,164
−0.2	252	15,364
0.5	308	5900
1.7	341	3240
0	250	21,938
0	275	14,138
0	300	7132
25	275	13,888
50	250	23,702
75	250	32,640
100	200	193,476
100	225	89,084
100	250	48,912