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登錄abaqus s4r與s4的區別?

安裝recurdyn v9r4后,工具箱是灰色,不可選,是怎么回事?






eq3=tan(theta)==A*omega2*cos(omega2*x);eq4=tan(theta)==-(b/a).^2*(((x-2*pi*n*v/omega1)*cos(theta)+(A+b/2-y)*sin(theta))/(x-2*pi*n*v/omega1)*sin(theta)-(A+b/2-y)*sin(theta));[x y theta] = solve(eq1,eq2
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