A.[σ] B.1.2[σ] C.0.6[σ] D.0.8[σ]
A.τ合=τm-τN B.τ合=τm+τN C.τ合=τm-τN D.τ合=τm×τN
A.合成應(yīng)力最低點(diǎn) B.合成應(yīng)力最高點(diǎn) C.載荷的最大應(yīng)力點(diǎn) D.載荷的最小應(yīng)力點(diǎn)