dum难道不是运行后的结果吗??这是怎么回事
dea lnlabor lnrd = lnrealgdp, rts(crs) ort(o) stage(1)
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name: dealog
log: /Applications/Stata/dea.log
log type: text
opened on: 7 May 2018, 20:11:01
variable dmu not found
(error in option rownames())
r(111);


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