• 2022-05-28
    试求题[tex=3.643x1.357]2Wvzcah0cZMlWQCYRm9OUQ==[/tex]图所示桁架杆[tex=4.857x1.286]9Os7PPB2uGx7sFWKUWhMW45bkoPaV7H1i32nytip05k=[/tex]的轴力。[img=505x207]179cfb21b6a0758.png[/img]