我有个cad图纸分解不开，提示说是1 个是多重插入块,块名"*U483"，请高手指点怎么分解?

把以下内容保存为lsp文件,加载后运行exm既可把，然后既可用“explode”分解。
;;-------------------------------------------------------------
;;转换“多重插入块”为“普通块”。
(DEFUN C:exm ()
(setvar "cmdecho" 0)
(SETQ STM (car (ENTSEL "\n点取多重块")))
(while stm
(setq e (entget stm))
(setq stlx (cdr (assoc 0 e)))
(if (= stlx "INSERT")
(PROGN
(setq r_zm70 (assoc 70 e))
(setq c_zm71 (assoc 71 e))
(setq r_dist_zm44 (assoc 44 e))
(setq c_dist_zm45 (assoc 45 e))
(setq e (subst (cons 44 0) r_dist_zm44 e))
(setq e (subst (cons 45 0) c_dist_zm45 e))
(setq e (subst (cons 70 0) r_zm70 e))
(setq e (subst (cons 71 0) c_zm71 e))
(setq e (subst (list 100 "AcDbBlockReference") (list 100 "AcDbMInsertBlock") e))
(entmake e)
(entdel stm)
))
(SETQ STM (car (ENTSEL "\n点取下一多重块")))
)
(setvar "cmdecho" 1)
)
;;--------------------------------------------------------------------
;;转换“普通块”为“多重插入块”
(DEFUN C:lockb ()
(setvar "cmdecho" 0)
(SETQ STM (car (ENTSEL "\n点取块")))
(while stm
(setq e (entget stm))
(setq stlx (cdr (assoc 0 e)))
(if (= stlx "INSERT")
(PROGN
(setq r_zm70 (assoc 70 e))
(setq c_zm71 (assoc 71 e))
(setq e (subst (cons 70 1) r_zm70 e))
(setq e (subst (cons 71 1) c_zm71 e))
(setq e (subst (list 100 "AcDbMInsertBlock") (list 100 "AcDbBlockReference") e))
(entmake e)
(entdel stm)
))
(SETQ STM (car (ENTSEL "\n点取下一块")))
)
(setvar "cmdecho" 1)
)
;;--------------------------------------------------------------------

用命令“X"炸开就是了，如果是多重块，炸到最后为止。

打开插入、外部参照管理器，选中此块名，点绑定，确定。就可以分解了

用炸开命令X