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β=10<21.7 β=13<21.7 β=12<21.7 β=14<21.7
β=6.3 β=10.50 β=12.50 β=20.83
1.57Al 1.79Al 2.11Al 2.55Al
β=6.3 β=10.50 β=12.50 β=20.83
β=6.3 β=10.50 β=12.50 β=20.83
β=18.91 β=16.81 β=21.01 β=23.11
β=18.91 β=16.81 β=21.01 β=23.11
80kN>65kN 75kN>68kN 90kN>65kN 70kN>68kN