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【多选题】
一点应力分量如下:(2,0,-1,4,0,3),单位。求主应力时需计算以下五个量:第二不变量等于(),第三不变量等于(),p等于(),q等于(),θ等于()。A.
27
B.
16
C.
-9.12
D.
-9.11
E.
-25.07
F.
20.9598
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