在AutoCAD中执行MATLAB生成的scr文件需要使用AutoLISP编程语言。下面是一个示例代码，可以将MATLAB生成的二维曲线绘制在AutoCAD中：

(defun c:drawcurve (/ curve points point)
(setq curve (getstring "\nEnter the name of the MATLAB-generated curve: "))
(setq points (vlax-invoke (vlax-get-property (vlax-get-acad-object) 'activedocument) 'modelspace 'addlwpolyline))
(vlax-for obj (vlax-invoke-method (vlax-get-property (vlax-create-object "matlab.application") 'workbooks) 'open (strcat curve ".scr"))
(setq point (vlax-make-safearray vlax-vbDouble '(0 . 1)))
(vlax-invoke-method obj 'eval (strcat "points = " curve ";"))
(vlax-for i (vlax-variant-value (vlax-invoke-method obj 'getvariable "points"))
(vlax-safearray-fill point i i)
(vlax-invoke-method points 'appendvertex (vlax-variant-value point))
)
)
(princ)
)

这段代码首先要求用户输入MATLAB生成的曲线名称，然后使用AutoLISP中的vlax-invoke函数打开MATLAB生成的scr文件，并执行其中的MATLAB命令。最后，使用AutoLISP中的vlax-invoke-method函数将生成的曲线绘制在AutoCAD中。